New Delhi, July 31 -- A man allegedly involved in the killing of six Meiteis in Manipur's Jiribam district was arrested in a joint operation by the National Investigation Agency (NIA) and Assam Police, officials said on Thursday.

The accused, identified as Thanglienlal Hmar alias Boya, is a resident of Moinathol village in Cachar district. He was arrested following specific intelligence inputs, according to Cachar Senior Superintendent of Police Numal Mahatta.

Hmar is suspected of playing a key logistical role in the "abduction and subsequent killing" of the six victims - three women and three children, Mahatta added.

"He was actively involved in transporting the victims and the armed assailants to the location where the killings were ...