Assam Rifles personnel of 7th battalion, combing Arong Nongmaikhong area, about 35 kms south from here, in the district early this morning were attacked by some unknown militants.
In the ensuing encounter, three militants were killed, sources said adding that a AK 47 rifle and a 9 mm pistol were found from the spot.
In another incident, an unidentified militant was killed by army personnel during a large-scale combing operation at Loktak lake and surrounding areas in Bishenpur district yesterday, sources said.
They said army personnel also used helicopters during the search operation and busted a camp inhabited by the militants.
The bodies have been sent to Regional Institute of Medical Science and Hospital here for a post-mortem.