QUETTA: A suicide bomber in Pakistan killed at least 70 people and wounded more than 100 on Monday in an attack on mourners gathered at a hospital in the southwestern city of Quetta, and Islamic State claimed responsibility. The bomber struck as a crowd of mostly lawyers and journalists crammed into the emergency department to accompany the body of a prominent lawyer who had been shot and killed in the city earlier in the day, Faridullah, a reporter who was among the wounded, told Reuters. Abdul Rehman Miankhel, a senior official at the government-run Civil Hospital, where the explosion occurred, told reporters that at least 70 people had been killed,...