The two leaders — Abu Zacharia and Abu Morsid — were killed when battalions from the Philippine police and army raided two apartments in Mindanao, the largest island in the southern portion of the archipelago, according to the Manila Standard.

Abu Morsid resisted arrest by throwing a hand grenade, which did not go off. Abu Zacharia engaged the Philippine forces in a 10-minute firefight that involved more grenades and a mortar.

The raid was quick and clean, with the only casualty outside the two targets being one Filipino soldier who received a leg injury during the firefight with Abu Zacharia, reports ABS-CBN.