Peshawar has been the target of frequent militant attacks in the past but has seen a relative lull recently. The Pakistani military launched the military operation in the nearby North Waziristan tribal area in June, vowing that it would go after all militant groups that had been operating in the region. With the launch of the operation, security officials and civilians feared a backlash by militants targeted by the military but until Tuesday, a widespread backlash had failed to materialize. Above: Survivor Mohammad Baqair poses for a picture at his home holding a photograph of his late mother who was a teacher at the school Picture: Muhammed Muheisen/AP

Credit : Muhammed Muheisen/AP