Authorities say two men were killed when a bomb they were allegedly carrying exploded prematurely along a highway in the restive southern Philippines.
No motive has been established, but Muslim rebels and criminal syndicates operate in the region.
Police chief Chino Mamburam in Kidapawan city says the homemade explosive went off early Friday, killing the suspected bomber instantly. He says investigators managed to talk to his companion before he died in a hospital.
Mamburam says it's possible the bomb was meant to disrupt peace talks with Muslim rebels.
The military blamed al-Qaida-linked militants for a blast last week in nearby Cotabato city that killed one man and wounded 12 people outside a gun store. Police suspect a land dispute was behind that incident.