WASHINGTON, Aug 1: The United States raised the security alert level to high for financial institutions in Washington on Sunday after new intelligence suggested a possible threat.

Intelligence suggested a threat against the International Monetary Fund and World Bank in Washington and the New York Stock Exchange, Department of Homeland Security chief Tom Ridge told a news conference.

He specifically mentioned concern about the Prudential building in New Jersey and the Citi group buildings in New York City, as well as the Stock Exchange. "The president made the final decision today, agreeing with the recommendation of (Homeland Security) Secretary Ridge to go ahead and raise the threat level," White House spokeswoman Erin Healy said.

She said the change came after US authorities received new intelligence within the past 72 hours, adding that Bush had been briefed on the situation every day since Friday.

The IMF said it had already been alerted about the threat, a spokesman said. "We have been advised by the US authorities of this possible threat and are taking all necessary precautions," said IMF spokesman Bill Murray. -Reuters