The NIA has formally registered a case to investigate the May 13 killings of three church leaders in Manipur.
The attack occurred when armed militants ambushed vehicles carrying members of the Thadou Baptist Association in Kangpokpi district.
The federal government ordered the NIA probe due to the gravity of the incident and its potential for wider societal impact.
Manipur has faced ongoing inter-community violence since May 2023, resulting in at least 260 deaths to date.