New Delhi: The NIA has arrested a terrorist lodged in an Assam jail for his alleged involvement in the killing of four civilians in Manipur's Bishnupur district earlier this year, the investigating agency said in a statement on Sunday.

Lunminsei Kipgen alias Langinmang alias Mang alias Levi, a resident of Manipur, was arrested by the National Investigation Agency (NIA) on Saturday from Central Jail, Lokhra in Guwahati under provisions of the Unlawful Activities (Prevention) Act and Arms Act. Was. Said.

The NIA statement said he is the first accused to be arrested for the gruesome murders that took place on January 18, when armed assailants brutally killed four civilians near a water treatment plant at Ningthoukhong Kha Khunou in Bishnupur.

"The NIA on Saturday arrested a man, who is currently in Guwahati jail in another case, in connection with the murder of four civilians in Manipur's Bishnupur district," it said.

The investigating agency said the attackers fired indiscriminately with sophisticated weapons, resulting in the death of civilians.

The NIA, which registered the case on February 9, found during investigation that Lunminseyi Kipgen was actively involved in the attack, which was part of the ongoing ethnic unrest and violence in the northeastern state.

Previously a cadre of the Kuki militant organization KNF(P), he joined another Kuki militant organization - the United Kuki National Army - during the current violence and took part in killings.