Kokrajhar, Oct. 15: A portion of a railway track was damaged when suspected NDFB militants triggered a blast near Singimari, 5km from Kokrajhar railway station, around 9.30last night, even as security measures were beefed up in the Bodo belt and lower Assam districts.

Police recovered another bomb packed in a gas cylinder and a 50-metre electric wire from the spot.

The blast partially damaged a 2-metre stretch of the track near Salakati railway station.

A railway source said the blast occurred when a goods train was scheduled to pass the area.

The train, however, could be stopped on time as the railway guard on duty spotted two bombs (cylinders) lying on the track and forced the train to a halt a few metres away.

Security has been beefed up in the Bodo belt — Kokrajhar, Chirang, Baksa and Udalguri — following the blast to thwart untoward incidents during the Puja.

The Udalguri district administration has also promulgated prohibitory orders to avoid skirmishes.

The order issued by the district magistrate restricts people from moving in groups of more than four during the curfew hours, from 10pm to 6am.