Nineteen soldiers have been killed and two wounded in a bus bombing in northeastern Sri Lanka, amid fierce fighting between Tamil Tiger fighters and government troops following the collapse of a four-year ceasefire. Sri Lankan military officials and hospital sources said that the soldiers were travelling to join the fighting when their bus was hit by a Claymore mine on Monday evening. "They did not expect a Claymore mine attack at that time of the night because usually troops travel on the main road during the day," a local military official said. Officials said 10 soldiers had died instantly and nine others were declared dead on admission to a local hospital. Two soldiers who survived the blast were air-lifted to a larger hospital in the region.