At that time, Muhammad Atif, aka Abu Hafs al-Masri, had overall responsibility for al Qaeda operations and was assisted by Sayf al-Adl.
Zacarias Moussaoui's Involvement in the 9/11 Operation
3. Sheikh Mohammed said that he intended for Moussaoui to participate in a follow-on attack in the U.S., unrelated to the 9/11 attacks.
4. KSM denied that Moussaoui ever had a 9/11 role, reiterating his previous statements that Moussaoui was intended for the second wave attacks. Sheikh Mohammed explained that Moussaoui was preparing for a second wave attack which entailed the same steps as the September 11 hijackers: getting flight lessons, purchasing knives, etc.
5. Sheikh Mohammed said that he was not even aware of Moussaoui's arrest until after 9/11. Sheikh Mohammed did not worry about not hearing from Moussaoui in the weeks before the 9/11 operation because Moussaoui was supposed to be in flight school and was not supposed to be in contact with him or anyone until after graduating. Sheikh Mohammed said that Moussaoui did not know Atta and there was never any contact between the two of them. Sheikh Mohammed pointed out that the 9/11 operation proceeded on schedule after Moussaoui's arrest, noting that if Moussaoui
