(Xinhua) -- Philippine government troops killed at least four left-wing rebels and injured three others in a fighting Saturday in the southern province of Agusan del Sur, said the official Philippines News Agency on Sunday. The report quoted a military spokesman as saying the government troops repulsed what could have been a raid by the New People's Army (NPA) guerrillas on a military detachment. "Our territorial forces gallantly defended their camp and showed how they employed tactics that repulsed the attacking NPA column which scampered to the nearby mountainous and forested area," the report quoted Armand Rico, a spokesman of Mindanao-based Eastern Command of the military, as saying.