Ahmad Akmad Usman y Batabol ( 1974 - 3 May 2015 ) more commonly known as Abdul Basit Usman was a bomb making expert who was head of the Special Operations Group of the Bangsamoro Islamic Freedom Fighters and had links with Abu Sayyaf and Jemaah Islamiyah groups .
Ahmad Akmad Usman y Batabol ( 1974 -- 3 May 2015 ) , better known as Abdul Basit Usman , was a Filipino Islamist and fugitive . He was a bomb making expert who was head of the Special Operations Group of the Bangsamoro Islamic Freedom Fighters and had links with Abu Sayyaf and Jemaah Islamiyah groups .