The arrest happened following intense combing operations by the NSD police here in the wake of a foiled rail sabotage bid in December last.
On December 22, concrete slabs were found on the railway track of the Nagercoil-Dadar Express near Thoppur between Salem and Dharmapuri.
However, the sabotage bid was foiled by an alert loco-pilot, who had slowed down the train after hitting the first few slabs, while others slid off the track.