Suspected Maoists blew away a portion of railway tracks early on Monday near Rourkela causing derailment of a goods train and disruption of train services on the Howrah-Mumbai route. A portion of the railway track at a place between Bhalulata and Jareikela, about 30 km from here, was blown up by suspected Maoists at 1 am leading to derailment of two wagons of a goods train, Rourkela railway station manager S K Panda told PTI. However, there have been no reports of injury or casualty in the incident. Following the blast, all trains on the Howrah-Mumbai route have been held up at different stations, Panda said, adding that explosives might also have been planted on the up-line of the route.