The law enforcement and intelligence sources, speaking on condition of anonymity, identified Al-Hawsawi as the third man. Al-Hawsawi, 34, a native of Saudi Arabia, is described as a “supporting conspirator” in the indictment of Zacarias Moussaoui, the alleged 20th hijacker in the Sept. 11 attacks. Federal prosecutors allege that Al-Hawsawi handled tens of thousands of dollars for the hijackers through bank accounts in the United Arab Emirates. He fled the UAE for Pakistan on the day of the attacks, according to the indictment.