An Indonesian Jemaah Islamiyah member was among six militants killed in a sea clash with Philippine troops off the country's southernmost province, an official said Sunday. The Philippine army, navy, and marines were involved in Saturday's gunbattle that killed the six militants aboard a motorboat off Tawi Tawi province, 1,050 kilometers (656 miles) southwest of Manila, navy spokesman Lt. Cmdr. Giovanni Carlo Bacordo said. Five Filipinos from the al-Qaida-linked Abu Sayyaf group also died, he said. Among the dead was Indonesian terrorist suspect Gufran, who uses only one name and allegedly belonged to the Indonesian-based militant group Jemaah Islamiyah, Bacordo said. Gufran was a key aide of Dulmatin, a top Indonesian terror suspect who has been hunted by troops in a months-long US-backed offensive on southern Jolo Island, he said.