THAILAND, BANGKOK -- Police suspect an Islamic group was involved in the bombing of a train in southern Thailand, the national police chief said Tuesday -- suggesting for the first time a link between Muslim activists and a rash of violence in the area. The small bomb, left in a box on the train, exploded Monday when the train was at Yala station. Two security guards who were inspecting the suspicious package were wounded when it blew up. Muslims are a majority in the south of Thailand, but make up just 4 percent of the country's 62 million people, who...