A suicide car bomber Monday killed 10 people at a paramilitary checkpoint in northwest Pakistan, where heavy fighting has sent more than 350,000 people fleeing in little more than a week. The bomb blast struck the outskirts of Darra Adam Khel, south of the city Peshawar, in a worrying sign that Islamist violence could be escalating away from military offensives designed to crush the Taliban further north. "Ten people were killed. Three of them died of their injuries in hospital. And seven people are injured," an intelligence official said. Officials said a six-year-old girl and two security personnel were among those killed when the suicide bomber exploded his car near the checkpost. No one claimed responsibility for the blast, but Islamists claim or are blamed for the deadliest bombings against security forces, who have been locked for years in fighting against encroaching Taliban militants.