Policemen carry out an operation against a bank robbery in Cavite Province, the Philippines. (File photo)
Unknown gunmen have attacked a security convoy in the center of the Philippines, killing nine police officers and village guards.
The convoy came under attack in Negros Occidental province while returning to its base after helping secure a village festival on Sunday.
About 20 armed men fired nearly 300 rounds of ammunition, leaving the nine dead and two other policemen wounded.
Officials say the attackers might have been either ‘communist guerrillas’ or members of an illegal logging syndicate.
The killings are the latest in gun violence amid calls for tighter gun controls in the Philippines.
The Sunday gun attack was carried out despite a national 150-day ban on carrying firearms outside residences imposed by election officials to prevent violence ahead of the congressional and local elections of May 13.