(Recasts, updates with exchange comment)

MEXICO CITY (Reuters) - Officials found no evidence
of a bomb at Mexico City's stock market Monday after an
anonymous threat was called into police earlier, an exchange
official said.

News of the bomb threat briefly rattled foreign exchange
markets but stock trading, which is now conducted entirely by
electronic means, was unaffected.

"We received a call with this information and immediately
the internal security procedures were put into effect. The
police also came and carried out their own investigation," said
Guillermo Medina, an exchange spokesman.

The headquarters of the stock market is a prominent
landmark on a major avenue in the heart of Mexico City.

Mexico's peso <MXN=> <MEX01> extended losses after the bomb
threat was reported to trade around 12.90 per U.S. dollar.

Stock traders said volumes were unaffected by the news and
that trading was normal.
(Reporting by Noe Torres, Liz Salazar, Lorena Segura, Jean
Luis Arce, Missy Ryan and Michael O'Boyle; writing by Robert
Campbell; Editing by Kenneth Barry)