Troops, backed by artillery and helicopter fire, have captured a key jungle camp of the Abu Sayyaf group and may have killed several militants during a two-day assault, military officials said Sunday. Marines and army troops captured the jungle encampment in Jolo island's mountainous Patikul township Friday with the help of US military intelligence, regional military chief Lt. Gen. Benjamin Dolorfino said. About 50 Abu Sayyaf fighters led by ailing commander Radulan Sahiron fled and were pursued by troops, he said. Two marines were wounded and several Abu Sayyaf fighters were believed killed as troops pursued the militants in an offensive that ended Sunday. At least one body of an Abu Sayyaf fighter killed in the assault was dug up by troops, he said. Dozens of army scout rangers were flown aboard air force helicopters to help pursue the militants, who were also targeted by artillery and helicopter fire, he said. Sahiron, a one-armed commander who suffers from diabetes and other ailments, apparently survived. Washington has offered a $1 million reward for information leading to his capture or killing. Dolorfino said the camp, which was ringed with foxholes, may have also housed members of the Southeast Asian militant network Jemaah Islamiyah because of the unusually tight security.