A suicide car bomb has killed at least 25 people, mostly women and children, near a military base in Afghanistan, police say. The bomber detonated explosives at a checkpoint near Camp Chapman, formerly used by the CIA, in eastern Khost province on Sunday. No US or coalition soldiers were killed in the attack. The base now houses both Afghan and foreign troops, including US soldiers. Local police chief Faizullah Ghairat said that in addition to the 25 killed, at least 10 civilians had been wounded. No group has said it carried out the blast, although the Taliban has often targeted troops and launched a fresh offensive in late April. Khost borders Pakistan and is one of Afghanistan’s most volatile provinces.