Gunmen opened fire on passenger vehicles in a tribal area in northwestern Pakistan on Thursday, killing at least 38 people and wounding 29, the chief secretary of the Khyber Pakhtunkhwa province, Nadeem Aslam Chaudhry, said. Among the fatalities in the attack, which occurred in the Kurram tribal district, were a woman and a child, Chaudhry said, adding: “It’s a major tragedy and death toll is likely to rise.”