Davao City, Philippines  - Four government troops were killed and three wounded in a clash with communist rebels in a southern Philippine province, police said Sunday.

The clash occurred Saturday afternoon in the town of Monkayo in Compostela Valley province, 945 kilometres south of Manila.

Superintendent Ronald dela Rosa, provincial police chief, said that government soldiers and militia members were on combat patrol when they encountered a group of rebels.

"Two soldiers and two militiamen were killed in the 30-minute gunbattle," he said.