Army officials however clarified that it was "not a surgical strike".
The Eastern Command of the Indian Army said in a tweet that a "firefight" occurred along the India-Myanmar border around 4.45 a.m. on Wednesday morning.
Here Army's statement on strikes against militant camps along India-Myanmar border https://t.co/UlW5nlhbU1
— ABP News (@abpnewstv) September 27, 2017
Army officials said the insurgents suffered "heavy casualties", while there were no casualties on the Indian side.
"Heavy casualties reportedly inflicted on NSCN(K) cadre. No casualties suffered by Indian Security Force," the Eastern Command said in a tweet.
In June 2015, the Indian Army had carried out a surgical strike along the India-Myanmar border on camps of Nationalist Socialist Council of Nagaland (Khaplang) militants, days after an ambush in which the militants killed 18 Army men in Manipur.