The military has handed over a P1-million reward to an informant who helped the Philippine Marines hunt down a sub-leader of extremist group Abu Sayyaf.

In a statement, the Armed Forces of the Philippines Western Mindanao Command said the informant's tip led Marines to the successful offensive by the Joint Task Forces Sulu, where Alhabsy Misaya was killed.

• Read: Abu Sayyaf sub-leader killed in Sulu: military

Misaya died in an encounter with pursuing soldiers in the remote town of Indanan, Sulu last week.

The Abu Sayyaf sub-leader was said to have been involved in the 2002 attack in Malagutan, which killed a US serviceman and left 23 others wounded.

Misaya was also involved in the kidnapping of Japanese-American treasure hunter Katayam Mamaito in Pangutaran, Sulu in 2010 and the abduction of Vietnamese sailors off Basilan in November.

Suluanos pooled contributions for the reward money after the military neutralized Misaya in their province.