SUICIDE bombings ripped through two mosques in Pakistan killing at least 57 people, including seven children, as believers marked the birthday of the Prophet Mohammad, police and health officials said. No group immediately claimed responsibility for the attacks, from which the death toll could climb, with many people seriously injured and others having been trapped beneath the wreckage. In the first blast, in Mastung in the southwestern province of Balochistan, the bomber detonated his explosives near a police vehicle where people were gathering for a procession, senior police official Munir Ahmed said. At least 52 people were killed, according to…