In Orissa, train services on the Howrah-Mumbai route have been disrupted due to derailment of a goods train following blowing up of a portion of railway tracks by suspected Maoists near Rourkela in the wee hours on Wednesday.<br/><br/>According to Railway sources, eight wagons of a goods trains derailed between Bisra and Bhalulata stations at around 2 am on Wednesday.<br/><br/>There was, however, no casualty. All up and down trains on the Howrah-Mumbai main line have been controlled at different stations as a result of this derailment.