At least eight policemen were killed Thursday during an operation by US-led coalition troops in central Afghanistan, an Afghan official said. The officers died in the village of Ghariban in Ghazni province during an operation that included US ground forces and airstrikes, said the deputy head of Ghazni's provincial council, Habeb-ul Rahman. It was unclear whether Afghan troops also took part in the raid. Two other villagers, including a woman, were killed in the clash, Rahman said. It was not immediately clear how the officers and civilians were killed.