MANILA, Philippines—Philippines troops battled Muslim extremists on the remote southern island of Jolo on Friday (February 3rd), a day after three of Southeast Asia’s top terror suspects were reported to have been killed there during a bombing strike.

Surviving militants on the island continue to put up dogged resistance, Regional Military Spokesman Lieutenant Colonel Randolph Cabangbang told AFP, adding the area was "not yet secured."

Among those believed to have been killed during the Thursday bombing was Malaysian Zulkifli bin Abdul Hir (aka Marwan), a suspected senior member of Jemaah Islamiyah and Kumpulan Mujahidin Malaysia with a $5 million bounty on his head.

Abu Sayyaf leader Abu Pula (Doctor Abu or Umbra Jumdail) and top Jemaah Islamiyah leader Mohammad Ali (Muawiyah) were also said be killed.

Jemaah Islamiyah is accused of carrying out many deadly attacks in Southeast Asia including the 2002 Bali bombings that killed 202 people, mostly tourists.