Washington ? A memo from a Phoenix FBI agent that was written two months before the Sept. 11 terrorist attacks named an Islamic extremist directly connected to the suicide pilot who crashed an airliner into the Pentagon, congressional investigators said Tuesday.

The so-called Phoenix memo, which was largely ignored by top FBI officials after it was sent to headquarters July 10, 2001, named 10 Muslim men who were the subjects of FBI investigations and had been linked by an FBI agent to U.S. flight schools and aviation training. The memo suggested Osama bin Laden was sending men to enroll in U.S. aviation programs in a coordinated plot.