The militant outfit in a release dated June 4, which was circulated in the media today, claimed that the attack yesterday was a joint operation by it, Kanglei Yawol Kanna Lup and Kangleipak Communist Party.
The release claimed that 20 army personnel, including a junior commissioned officer, were killed and 12 others injured in the incident.
It claimed that during the attack a five-vehicle convoy of 6th Dogra Regiment was "assaulted" at Tengnoupal-New Somtal Road in Chandel district of Manipur.
After the ceasefire abrogation in March this year, NSCN(K) had on May 3 attacked and killed nine Assam Rifles personnel in Mon district. Another AR personnel was killed in Kohima on May 6 by the insurgent outfit, while four personnel of the para-military force were injured in an attack by the group at Kohima in April.
Prime Minister Narendra Modi had yesterday condemned the attack.
