At least 25 people, mostly civilians and including six children playing cricket, were killed in separate attacks in Afghanistan, dpa cited officials as saying Tuesday. A group of gunmen opened fire on a bus in the eastern province of Wardak, killing 13 passengers. "The bus heading from Kabul to Ghazni province came under fire in the early morning in Sayedabad district," said provincial spokesman Ataullah Khogyani. The motive of the shooting is not clear yet, he said.