A bomb exploded in a train coach in India's insurgency-hit northeast on Tuesday, killing at least three people and injuring another 29, a state government official said. The explosion occurred shortly after the train arrived at Diphu railroad station, about 200 miles (300 kilometers) south of Gauhati, the capital of Assam state, said District Magistrate M.C. Sahu. The train was heading from Lumding in central Assam to the eastern commercial hub of Tinsukhia, Sahu was quoted as saying by Associated Press.