Operative and principal bomb maker of Al-Qaida in the Arabian Peninsula (AQAP) (QDe.129). Believed to be hiding in Yemen as at Mar. 2011. Wanted by Saudi Arabia. Also associated with Nasir 'abd-al-Karim 'Abdullah Al-Wahishi (QDi.274), Qasim Yahya Mahdi al-Rimi (QDi.282), and Anwar Nasser Abdulla Al-Aulaqi (QDi.283).