JAKARTA - Southeast Asian militant group Jemaah Islamiah's bomb technician Dulmatin was killed in police raids on the outskirts of Jakarta, Indonesia's President Susilo Bambang Yudhoyono said.

Here are some facts about Dulmatin:

* He was a senior figure in Jemaah Islamiah and is believed to have helped mastermind the 2002 Bali nightclub bombings that killed 202 people. Born in Pemalang in Central Java, he was believed to be about 40 years old and has used many aliases, including Joko Pitoyo, Joko Pitono and Noval.

* The U.S. government had offered a $10 million reward for information leading to his arrest and had described him as "an electronics specialist with training in al Qaeda camps in Afghanistan". * Dulmatin fled to the southern Philippines in 2003, seeking shelter initially with the Philippines' largest Muslim rebel group, the Moro Islamic Liberation Front (MILF). But after peace talks between Manila and the MILF he had to flee and was given shelter by the smaller but more violent Abu Sayyaf, an al Qaeda-linked militant group on the southern island of Jolo.

* Philippine security forces say he helped train local Muslim rebels to assemble crude bombs and is believed to have planned attacks in the southern Philippines while maintaining contacts with Indonesia using the Internet.

* Dulmatin is believed to have be wounded in a shoot-out between Islamist separatists and the Philippine army on Jolo. Later, four of his children were found near the area and his wife later took the children back to Indonesia. In 2008, Philippine security forces found a dead body, which they believed at the time to be Dulmatin, but never confirmed it was him.

Sources: Reuters, U.S. government, Philippines' police (Compiled by Ed Davies, Sunanda Creagh and Manny Mogato in Manila)