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<SEC-DOCUMENT>0001104659-06-030702.txt : 20060503
<SEC-HEADER>0001104659-06-030702.hdr.sgml : 20060503
<ACCEPTANCE-DATETIME>20060503151309
ACCESSION NUMBER:		0001104659-06-030702
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20060503
ITEM INFORMATION:		Results of Operations and Financial Condition
FILED AS OF DATE:		20060503
DATE AS OF CHANGE:		20060503

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERNATIONAL BANCSHARES CORP
		CENTRAL INDEX KEY:			0000315709
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				742157138
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09439
		FILM NUMBER:		06803452

	BUSINESS ADDRESS:	
		STREET 1:		12OO SAN BERNARDO AVE
		STREET 2:		PO BOX 1359
		CITY:			LAREDO
		STATE:			TX
		ZIP:			78040-1359
		BUSINESS PHONE:		9567227611

	MAIL ADDRESS:	
		STREET 1:		P O BOX 1359
		STREET 2:		1200 SAN BERNARDO
		CITY:			LAREDO
		STATE:			TX
		ZIP:			78040
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a06-11018_18k.htm
<DESCRIPTION>CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES
<TEXT>
<html>

<head>





</head>

<body lang="EN-US" style="text-justify-trim: punctuation">

<div style="font-family:Times New Roman;">

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<div style="border:none;border-top:double windowtext 9.0pt;padding:0in 0in 0in 0in;">

<p style="border:none;margin:0in 0in .0001pt;padding:0in;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

</div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED STATES</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES AND EXCHANGE
COMMISSION</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington,
D.C. 20549</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;8-K</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="5" face="Times New Roman" style="font-size:18.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT REPORT</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Pursuant to Section&nbsp;13 or 15 (d)&nbsp;of The
Securities Exchange Act of 1934</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of
Report (Date of earliest event reported):<b><font style="font-weight:bold;"> May&nbsp;3,
2006</font></b></font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">INTERNATIONAL BANCSHARES CORPORATION</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact Name of registrant
as specified in its charter)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Texas</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">0-9439</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">74-2157138</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction<br>
  of incorporation</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission File<br>
  Number)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer<br>
  Identification No.)</font></p>
  </td>
 </tr>
 <tr>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="66%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:66.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1200 San
  Bernardo, Laredo, Texas</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">78040-1359</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="66%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:66.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of
  principal executive offices)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="32%" valign="top" style="padding:0in 0in 0in 0in;width:32.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(ZIP Code)</font></p>
  </td>
 </tr>
</table>

</div>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Registrant&#146;s telephone number, including area
code</font><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>(956) 722-7611</b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">None</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former name or former
address, if changed since last report)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box below if the Form&nbsp;8-K
filing is intended to simultaneously satisfy the filing obligation of the
registrant under any of the following provisions (see General Instruction
A.2.below):</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font> Written
communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR
230.425)</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font> Soliciting material
pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font> Pre-commencement
communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17
CFR 240.14d-2(b))</p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font> Pre-commencement
communications pursuant to Rule&nbsp;13e-4 (c ) under the Exchange Act (17 CFR
240.13e-4 ( c))</p>

<div style="border:none;border-bottom:double windowtext 9.0pt;padding:0in 0in 0in 0in;">

<p align="center" style="border:none;margin:0in 0in .0001pt;padding:0in;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

</div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><hr size="2" width="100%" noshade color="gray" align="left"></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2.02 - Results of Operations and
Financial Condition</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On
May&nbsp;3, 2006, International Bancshares Corporation issued a news release
announcing first quarter 2006 earnings. The news release, attached hereto and
filed herewith as Exhibit&nbsp;99, is incorporated herein by reference.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">All of the information furnished in Item&nbsp;2.02
of this report and the accompanying exhibits are also intended to be included
under &#147;Item 7.01 &#150; Regulation Fair Disclosure&#148; and shall not be deemed to be &#147;filed&#148;
for the purposes of Section&nbsp;18 of the Securities and Exchange Act of 1934,
as amended, is not subject to the liabilities of that section&nbsp;and shall
not be incorporated by reference in any filing under the Securities Act of
1933, as amended.</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="2" width="100%" noshade color="gray" align="left"></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div style="font-family:Times New Roman;">

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to
the requirements of the Securities Exchange Act of 1934, the registrant has
duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="47%" valign="top" style="padding:0in 0in 0in 0in;width:47.22%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="52%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:52.78%;">
  <p style="font-size:10.0pt;margin:0in 0in .0001pt 10.0pt;text-autospace:none;text-indent:-10.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INTERNATIONAL BANCSHARES CORPORATION </font></b>(Registrant)</p>
  </td>
 </tr>
 <tr>
  <td width="47%" valign="top" style="padding:0in 0in 0in 0in;width:47.22%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="52%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:52.78%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="47%" valign="top" style="padding:0in 0in 0in 0in;width:47.22%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="52%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:52.78%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="47%" valign="top" style="padding:0in 0in 0in 0in;width:47.22%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.56%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="27%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:27.7%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;&nbsp;/s/ Dennis E.
  Nixon</font></p>
  </td>
  <td width="19%" valign="top" style="padding:0in 0in 0in 0in;width:19.52%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="47%" valign="top" style="padding:0in 0in 0in 0in;width:47.22%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="5%" valign="top" style="padding:0in 0in 0in 0in;width:5.56%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="47%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:47.22%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">DENNIS E. NIXON, President,<br>
  and Chief Executive Officer</font></p>
  </td>
 </tr>
 <tr>
  <td width="47%" valign="top" style="padding:0in 0in 0in 0in;width:47.22%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
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  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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  <td width="52%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:52.78%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date: May&nbsp;3, 2006</font></p>
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  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT&nbsp;INDEX</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="75%" style="border-collapse:collapse;margin-left:1.0in;width:75.0%;">
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  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99</font></p>
  </td>
  <td width="79%" valign="top" style="padding:0in 0in 0in 0in;width:79.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">News Release of International
  Bancshares Corporation dated May&nbsp;3, 2006.</font></p>
  </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p>

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<h1 align="right" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:right;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">EXHIBIT&nbsp;99</font></b></h1>

<h1 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">&nbsp;</font></b></h1>

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 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.44%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Contact: </font></p>
  </td>
  <td width="43%" valign="top" style="padding:0in 0in 0in 0in;width:43.4%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rosanne Palacios</font></p>
  </td>
  <td width="8%" valign="bottom" style="padding:0in 0in 0in 0in;width:8.32%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="39%" valign="top" style="padding:0in 0in 0in 0in;width:39.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Judy Wawroski</font></p>
  </td>
 </tr>
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  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="43%" valign="top" style="padding:0in 0in 0in 0in;width:43.4%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">International Bancshares Corporation</font></p>
  </td>
  <td width="8%" valign="bottom" style="padding:0in 0in 0in 0in;width:8.32%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="39%" valign="top" style="padding:0in 0in 0in 0in;width:39.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">International Bancshares Corporation</font></p>
  </td>
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  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.44%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;text-autospace:none;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="43%" valign="top" style="padding:0in 0in 0in 0in;width:43.4%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;text-autospace:none;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(956) 722-7611 (Laredo)</font></p>
  </td>
  <td width="8%" valign="bottom" style="padding:0in 0in 0in 0in;width:8.32%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;text-autospace:none;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="39%" valign="top" style="padding:0in 0in 0in 0in;width:39.84%;">
  <p align="left" style="margin:0in 0in .0001pt;text-align:left;text-autospace:none;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(956) 722-7611 (Laredo)</font></p>
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<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">FOR IMMEDIATE RELEASE:</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<h1 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">IBC
Announces First Quarter Earnings</font></b></h1>

<h1 style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">&nbsp;</font></b></h1>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">LAREDO,
Texas&#151;(BUSINESS WIRE)&#151;May&nbsp;3, 2006&#150;International Bancshares Corporation
(NASDAQ: IBOC) today reported earnings for the first quarter of 2006 of <b><font style="font-weight:bold;">$24.0</font></b>, or $.37 diluted earnings per common share and $.38 basic earnings per
common share, as compared to <b><font style="font-weight:bold;">$37.7 </font></b>million
or $.58 diluted earnings per common share and $.59 basic earnings per common
share for the same period of 2005. All per share amounts for prior periods have
been adjusted for the 25% stock dividend declared on May&nbsp;2, 2005 and paid
on May&nbsp;31, 2005.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Net
income for the first quarter 2006 was negatively impacted by a $8.9 million,
net of tax, charge to operations as a result of the loss of a IRS tax lawsuit
that was litigated during the third quarter of 2005 in the Federal District
Court in San Antonio, Texas and that relates to certain leasing transactions
previously discussed in Footnote 17 of the Notes to Consolidated Financial
Statements set forth in the Company&#146;s 2005 Annual Report. Because of the trial
court judgment issued on March 31, 2006, the uncertainty of the outcome at the
appellate level and the similarity between the litigated lawsuit and one that
is pending, the Company took the $8.9 million charge, net of tax. Net income
for the first quarter 2005 was positively impacted by a $4.8 million distribution, net of tax, from the January, 2005 merger of
the PULSE EFT Association with Discover Financial Services, a business unit of
Morgan Stanley. The Company, as a member of the PULSE EFT Association, received
the distribution based in part&nbsp;upon its volume of transactions through the
PULSE network.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="line-height:normal;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#160;&#147;I&#146;m pleased with the first quarter earnings
of 2006 despite the $8.9 million charge related to the tax lawsuits, which the
Company intends to pursue through the appeals process.&#148; Dennis E. Nixon, President
and CEO, said. &#147;The Company has continued to grow its operations and enhance
long term shareholder value through aggressive de novo branch expansion. I am
also pleased with the Board of Directors&#146; confidence in the Company&#146;s continued
success throughout the year, resulting in a $.35 per share cash dividend being
declared, payable on May&nbsp;1, 2006, which represented a 9.4% increase over
the dividend paid in the same period of 2005.&#148;</font></p>

<p style="line-height:normal;margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Total
assets at March&nbsp;31, 2006 were <b><font style="font-weight:bold;">$10.5</font></b> billion
compared to <b><font style="font-weight:bold;">$10.4</font></b> billion at December&nbsp;31,
2005. Total loans at March&nbsp;31, 2006 and December&nbsp;31, 2005 were <b><font style="font-weight:bold;">$4.6</font></b> billion. Deposits at March&nbsp;31, 2006 were <b><font style="font-weight:bold;">$6.8</font></b> billion compared to <b><font style="font-weight:bold;">$6.7</font></b>
billion at December&nbsp;31, 2005.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">IBC
is a multi-bank financial holding company headquartered in Laredo, Texas, with
over 200 facilities and over 300 ATMs serving more than 80 communities in Texas
and Oklahoma.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#147;Safe Harbor&#148; statement under the Private
Securities Litigation Reform&nbsp;Act of 1995: The statements contained in this
release which are not historical facts contain forward looking information with
respect to future developments or events, expectations, plans, projections or
future performance of IBC and its subsidiaries, the occurrence of which involve
certain risks and uncertainties, including those detailed in IBC&#146;s filings with
the Securities and Exchange Commission.</font></p>

<p align="left" style="margin:0in 0in .0001pt;text-align:left;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Copies
of IBC&#146;s SEC filings and Annual Report (as an exhibit&nbsp;to the 10-K) may&nbsp;be
downloaded from the SEC filings site located at http://www.sec.gov/edgar.shtml</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman">&nbsp;</font></p>

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