The security personnel, acting on a tip-off, launched a massive search operation in Sekmaijin area under Kakching police station during which Itomba alias Leirang (30) was arrested yesterday.
One 9mm pistol with some live ammunitions was recovered from the possession of Itomba, who is being interrogated in Kakching police station, sources said.
More than ten insurgents have so far been arrested by security and police personnel during various search operations in the state this year.