Al-Ustaj Umbra Amiril Kato ( 18 May 1946 -- 14 April 2015 ) was the founder of the Bangsamoro Islamic Freedom Fighters ( BIFF ) a group which seceded from Moro Islamic Liberation Front ( MILF ) .
Al-Ustaj Umbra Amiril Kato ( 18 May 1946 -- 14 April 2015 ) was a Filipino terrorist . He was the founder of the Bangsamoro Islamic Freedom Fighters ( BIFF ) a group which seceded from Moro Islamic Liberation Front ( MILF ) .