The agency sleuths arrested Seiminlun Gangte in a case the NIA registered suo moto on July 19 this year. The accused has been brought to Delhi after his arrest and will be produced before the jurisdictional court.
The officers were apprised of the unfortunate injuries of students as well as security personnel, police said adding that the forces discussed using minimum force in dealing with the public, especially students.
A mob tried to attack Chief Minister N Biren Singh's empty ancestral house on Thursday night, despite a security clampdown and curfew in the Imphal valley.
Photos of the bodies of the two students -- Phijam Hemjit (20) and Hijam Linthoingambi (17) -- who were missing since July 6, were shared widely on social media on Monday, sparking fresh rounds of protests in the state.
Protest rallies erupted in the streets of Imphal with thousands of students sloganeering against the kidnapping and killing of two youths for the second consecutive day on Wednesday.