CHITTAGONG (Reuters) - A bus carrying scores of Bangladeshi schoolboys celebrating a soccer victory against another school plunged off a hill road on Monday killing at least 53, police said. The accident happened at Mirersarai, 240 km southeast of the capital Dhaka, near the port of Chittagong. Survivors told reporters at the hospital that the children were in a happy mood, singing and dancing, when the bus crashed 50 feet into a flooded ditch. The weather was cloudy after days of rain.