A NATO missile strike in Tripoli on Saturday killed one of Muammar Qaddafi’s sons and three grandchildren, a government spokesman said. The attack struck the house of Seif al-Arab (Qaddafi’s 29 year old son) while the Libyan leader and his wife were inside, said Libyan government spokesman Moussa Ibrahim. The deaths of Seif al-Arab and the three pre-teen grandchildren could not be independently verified.