Suspected Maoists blew up a portion of railway tracks in Orissa in the wee hours of Wednesday, causing derailment of a goods train and disrupting train services on the Howrah-Mumbai route.

Eight wagons of a goods train derailed when the suspected Maoists blew up a portion of the railway track between Bisra and Bhalulata stations at around 2 am, railway sources said.

There was, however, no casualty.

All trains on the Howrah-Mumbai main line have been controlled at different stations as a result of this, the sources said.

The spot where the goods train derailed was 20 km from Rourkela, the sources said.

CRPF and GRP personnel have left for the spot from here.

Just two days ago, a railway track was blown up between Bhalulata and Jareikela stations by suspected Maoists leading to derailment of two wagons of a goods train.