By Kevin Johnson
WASHINGTON — Federal authorities investigated "specific, credible but unconfirmed" threats Thursday night involving possible plots to attack New York City and Washington around the 9/11 anniversary, the Department of Homeland Security said.
The threat involving possible bombings was shared with New York and Washington police.
The threat information was about three people who may have been dispatched to the U.S. to meet with associates to carry out the attacks, said a federal law enforcement official who was not authorized to speak publicly and asked not be identified.
Authorities check 'credible' threats to NYC, DC