Gunmen opened fire on an ambulance attending the scene of a suicide bomb attack at a roadside police checkpoint in northwestern Pakistan that killed at least 12 people on Saturday and wounded about 35 others, officials said.
The attack involving an explosives-laden vehicle occurred in Dera Ismail Khan, a district in Khyber Pakhtunkhwa province, said Bilal Faizi, a spokesman for the provincial emergency service. Local police chief Safdar Baloch said most of those killed and wounded were security personnel and passersby.
