“U.S. officials said Thursday evening they have “specific, credible but unconfirmed” information about a threat against the United States coinciding with the 10th anniversary of the September 11 terrorist attacks.
“We have received credible information very recently about a possible plot directed at the homeland that seems to be focused on New York and Washington, D.C.,” a senior administration official told CNN Pentagon Correspondent Barbara Starr.”
Source: Officials confirm ‘credible but unconfirmed’ 9/11 threat – CNN.com