According to sources, personnel of 29th Assam Rifles battalion during patrolling in the interior hilly Semang village area in Chandel district were fired upon by some suspected militants.
During exchange of fire, a militant suspected to be member of banned People's Liberation Army (PLA) was killed.
Sources said adding that one 9 mm pistol along with some live rounds was recovered from the spot.
The body has been sent to Regional Institute of Medical Science and Hospital here for postmortem.
Over 450 people have so far been killed in militancy related crimes in Manipur this year.