A convoy of Assam Rifles was ambushed by militants in an area between Ghokishe and Luvishe villages in Zunheboto district of Nagaland injuring a security personnel.
The intermittent exchange of gunfire lasted for around half an hour on Friday, police said.
According to Assam Rifles, their personnel sustained an injury on his leg and it was not life-threatening.
No civilian was injured in the attack, police said.
The Khaplang faction of the Nationalist Socialist Council of Nagaland (NSCN-K) claimed responsibility for carrying out the ambush and said four Assam Rifles personnel were injured.