An active-duty Navy captain has become the second military officer to come forward publicly to say that a secret intelligence program tagged the ringleader of the Sept. 11 attacks as a possible terrorist more than a year before the attacks.

The officer, Scott J. Phillpott, said in a statement on Monday that he could not discuss details of the military program, which was called Able Danger, but confirmed that its analysts had identified the Sept. 11 ringleader, Mohamed Atta, by name by early 2000. "My story is consistent," said Captain Phillpott, who managed the program for the Pentagon's Special Operations Command. "Atta was identified by Able Danger by January-February of 2000."