Colonel Morris Davis, chief prosecutor for the US office of Military Commissions, said, "He eventually left Afghanistan and it's my understanding was heading back to Australia when 9/11 happened. When he heard about 9/11, he said it was a good thing (and) he went back to the battlefield, back to Afghanistan, and reported in to the senior leadership of al-Qaeda and basically said, 'I'm David Hicks and I'm reporting for duty.'" Davis also compared Hicks' alleged actions to that of those who carried out terrorist attacks such as Bali, the London and Madrid bombings, and the Beslan school siege. Terry Hicks, said that his son seemed at first unaware, then sceptical, of the 11 September attacks when they spoke on a mobile phone in early November 2001. He also noted David Hicks commented about "going off to Kabul to defend it against the Northern Alliance."