The Army and police launched an operation on specific intelligence inputs from the Military Intelligence agencies and nabbed the RNLA self-styled commander-in-chief, also known as Poko, Defence officials said.
One 7.65 mm pistol, ammunition and a hand grenade were recovered from him.
He was wanted in several cases including for planting an improvised explosive devise (IED) on railway tracks near Krishnai in February last year and a suspected attack on an Army convoy in 2013 and for various extortion and other subversive activities, they said.