Philippines : Authorities did not identify Ampatuan as a suspect . The Unsay mayor led police that initially arrested civilians , and cite reports as saying . They hold leadership positions in Mindanao . Authorities disband paramilitary force in the southern Philippines .
NEW : Authorities did not identify Ampatuan as a suspect . Datu Unsay mayor led group that initially stopped civilians , police cite reports as saying . Ampatuans hold leadership positions in Mindanao . Authorities disband paramilitary force in the southern Philippines .