Philippine marines killed six al-Qaida-linked militants early Sunday in an assault on a rebel encampment on a southern island, a senior military commander said. A marine special operations platoon raided an Abu Sayyaf camp outside Maimbung township on Jolo island following intelligence reports that two wanted militant leaders, Umbra Jumdail and Albader Parad, were there, said Lt. Gen. Benjamin Dolorfino. Three marines were wounded in the clash. Officials were trying to verify an initial report that one of the Abu Sayyaf commanders was among those killed, Dolorfino said. The operation was based on a "very strong intelligence report" that the two militant commanders were at the camp, he said.