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Terror Alert for Financial Sites

Federal authorities warned of potential Al Qaeda (search) bombing attacks on prominent financial institutions in New York, Washington and Newark, N.J., prompting increased security and concern from the unusually detailed information unearthed on the plot.

"The quality of this intelligence — based on multiple reporting streams, in multiple locations — is rarely seen, and it is alarming in both the amount and specificity of the information," Homeland Security Secretary Tom Ridge (search) said at a hastily arranged news conference Sunday.

A cache of recently obtained information — including photos, drawings and written documents — indicates that Al Qaeda operatives have undertaken a meticulous preparations to case five specific buildings: The Citigroup Center building and the New York Stock Exchange in New York, the International Monetary Fund and World Bank buildings in Washington and Prudential Financial Inc.'s headquarters in Newark.

Ridge raised the terror threat level for financial institutions in the three cities to orange, or high alert, the second highest level on the government's five-point spectrum. Elsewhere, he said, the alert would remain at yellow, or elevated.

"Iconic economic targets are at the heart of (the terrorists') interest," Ridge said.

The fresh intelligence did not give crucial details about when, where or how terrorists may strike, Ridge said, but government analysis indicates terrorists may prefer to use car or truck bombs or other means to physically destroy targets.

Briefing reporters in New York, Police Commissioner Raymond Kelly (search) said that starting Monday, trucks would be banned from the Manhattan-bound side of the Williamsburg Bridge, which connects Brooklyn and lower Manhattan. Commercial vehicles also were banned from the inbound of the Holland Tunnel from New Jersey, among other measures.

In Newark, police set up metal fences surrounding the Prudential Plaza building, blocked off two city streets and toted assault rifles.

And in Washington, Mayor Anthony Williams put the entire city on an orange alert, although the Homeland Security Department has not officially raised the threat level outside financial-sector buildings. Police Chief Charles H. Ramsey said teams of bomb-sniffing dogs would sweep areas around the World Bank and IMF headquarters, and officers will conduct more traffic stops of large vehicles in the area.

Officials have warned that the Al Qaeda network, blamed for the Sept. 11, 2001, attacks, may launch a large-scale assault in hopes of disrupting the Nov. 2 elections and demonstrating that it remains capable of offensive actions despite international efforts to combat terrorism.

An example of that international cooperation, Sunday's warning stems in large part from Pakistan's capture of an Al Qaeda operative several weeks ago, a U.S. counterterrorism official said, speaking only anonymously because of the sensitive nature of the information.

The CIA provided information that led to the arrest; officials would not identify the operative.

That detention led to the discovery of the documentary information — obtained during a successful CIA counterterrorism operation — about the extensive surveillance of the five buildings, the counterterrorism official said. Based on clues found within the information, the official said the scouting was going on before and after 9/11, but it's unclear how recently it took place.

That information was also discovered in Pakistan. Ridge would not comment on specific sources of the intelligence, but he credited strong partnerships with allies around the world, specifically citing Pakistan.

A senior intelligence official, also speaking on condition of anonymity, said the intelligence gathered from several sources indicated scouting had been done to identify security in and around these buildings; the best places for reconnaissance; how to make contact with employees who work in the buildings; traffic patterns; and locations of hospitals and police departments.

Examples of the detail the official cited: midweek pedestrian traffic counts of 14 people per minute on each side of the street for a total of 28 people. The official said he had not seen such extraordinary detail in his 24 years in intelligence work.

Officials in New York, New Jersey and Washington encouraged people to continue their normal activities but remain vigilant. The stock exchange and the Washington institutions were to open for business Monday, as was Prudential, with employees expected to report to work.

Local authorities in Washington said additional security measures were being put in place at the IMF and World Bank, as well as at the Bureau of Engraving and Printing, where the nation's paper currency is produced, and the Federal Reserve, the most potent symbol of America's financial strength.

A stock exchange spokesman declined to comment on security, but increased measures since the Sept. 11 attacks have included barricades on all sides and checkpoints to enter the exchange building.

A spokesman for Citigroup, whose 59-story headquarters is among Manhattan's tallest, cited a company e-mail to employees that said they should expect to see tighter security at all of the company's New York buildings.

A spokesman for Prudential said the company had increased its security before the threat, but declined to offer details.