A rocket fired by unidentified assailants struck a house in southwestern Pakistan early Friday, killing a 14-year-old boy and injuring seven others, police said. It was not immediately clear who was behind the attack in Quetta, the capital of Pakistan's southwestern Baluchistan province, and police official Rafiullah Shah said they were still investigating. He said the victims were transported to a hospital, where two were in critical condition. No one immediately claimed responsibility for the attack.