Personnel of 12th Maratha Light Infantry led by Lt. Satbir Singh was patrolling Oinam area in Bishenpur district when they were attacked by unidentified militants at around 9.30 pm on Wednesday night.
The army personnel returned the fire and in the ensuing encounter Lt. Satbir Singh (25), who hailed from Navaram village in Haryana, was killed and a jawan identified as Chandrakanta (28) was injured.
Minutes before the encounter, the militants had exploded two grenades and fired at the house of a Manipur government official identified as Ibopishak Singh near Oinam area in connection with a monetary demand.
While coming out from Singh's house, they were confronted by the army personnel who were patrolling the area, the police said. The militants escaped under the cover of darkness, the police added.
