Counterterrorism officials said Thursday they are investigating a credible but unconfirmed terror threat involving New York or Washington.
The threat was so specific, and coming at a time of already heightened security just days before the 10th anniversary of the Sept. 11 attacks, that it could not be ignored, a counterterrorism official told The Associated Press. The official requested anonymity to discuss sensitive security information.
Officials would not tell the AP what specifically is being targeted in New York or Washington or the timing of a potential attack. A government official, speaking on condition of anonymity, said raising the terror alert is under consideration.
A law enforcement official in New York, also speaking on condition of anonymity to discuss sensitive security information, described the threat as credible but declined to give details.
Information gleaned from Osama bin Laden's compound in May indicated that al-Qaida had considered attacking the U.S. on the 10th anniversary and other important dates. Security has been enhanced around the country, including in New York and Washington, in the weeks leading up to Sunday's anniversary.