There was an offer from NSCN-IM to security forces that it would like to join the operations against NSCN-K militants in Manipur, Nagaland as well as across Indo-Myanmar border immediately after the June 4 incident, sources privy to the development said.
However, government turned down the offer saying it was capable of dealing with the Naga insurgent group.
On Tuesday, Special Force of the Army had attacked rebel camps deep inside Myanmar and inflicted heavy casualties on them.
The three leaders then formed NSCN (Nationalist Socialist Council of Nagaland). In April 1988, Khaplang announced the formation of NSCN-K after making an unsuccessful attempt on Muivah's life.
Khaplang now heads recently-floated United National Liberation Front of Western South-East Asia, an umbrella group of five more rebel outfits from northeastern region, including ULFA, PLA and NDFB(S).
NSCN-K, along with a few Manipuri outfits, were responsible for the killing of 18 army men in Chandel district of Manipur on June 4.
