EXHIBIT 99

CONTACT:
Dennis E. Nixon
Chairman & CEO
International Bancshares Corporation
(956) 722-7611

Katie Brickman or
Stephanie Jersig
Taylor West Advertising
(210) 826-8899

FOR IMMEDIATE RELEASE:

  INTERNATIONAL BANCSHARES CORPORATION AUTHORIZES ADDITIONAL STOCK REPURCHASES

Laredo, Texas-- (BUSINESS WIRE) -- (June 22, 1999)--International Bancshares
Corporation (NASDAQ:IBOC) announced that its board of directors authorized the
Company to repurchase up to $9 million of its common stock during the next 12
months.

Stock repurchases may be made from time to time, on the open market or through
private transactions. Shares repurchased in this program will be held in
treasury for reissue for various corporate purposes, including employee stock
option plans. The Company currently has approximately $21.5 million invested in
treasury shares.

IBC is a $4.8 billion multi-bank holding company headquartered in Laredo, Texas,
with 93 facilities and 164 ATM's serving 28 communities including Houston, San
Antonio, Corpus Christi, McAllen, Brownsville, Port Lavaca, Zapata and
throughout the Rio Grande Valley and the Texas Gulf Coast.

"Safe Harbor" statement under the Private Securities Litigation Reform Act of
1995: The statements contained in this release which are not historical facts
contain forward looking information with respect to plans, projections or future
performance of IBC and its subsidiaries, the occurrence of which involve certain
risks and uncertainties detailed in IBC's filings with the Securities and
Exchange Commission.

Copies of IBC's SEC filings and Annual Report (as an exhibit to the 10-K) may be
downloaded from the Internet at no charge from FreeEDGAR, a real-time access to
SEC filings site located at HTTP://WWW.FREEEDGAR.COM.

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