During their questioning, they confessed to their terror activities, and when the police searched their residences and nearby areas, the chopped-up body was found in a drain in Bhalswa Dairy.
The case was initially registered on September 19 last year at Shivamogga Rural Police Station in Karnataka's Shivamogga district and was re-registered by the NIA on November 4 last year.
According to the NIA chargesheet, the four men also raised funds, recruited other terrorists and encouraged them to work towards the goal of establishing Islamic rule in the country by 2047.
Hitesh Basumatary, a Bodoland People's Front candidate, triumphed in the 2011 Assembly elections from the Chapaguri constituency. Additionally, he held the position of Executive Member of the Bodoland Territorial Council.