Guwahati, June 24 -- The National Investigation Agency (NIA) has taken formal custody of ULFA (Independent) brigadier Rupam Asom, also known as Kant Borah, shortly after Tinsukia police in Assam apprehended him earlier this month.

Officials confirmed that investigators have subjected the senior insurgent leader to intense interrogation sessions over the past three days at the NIA's Sonapur office near Guwahati in Assam.

Rupam Asom plays a central role in multiple high-profile investigations involving murder, abduction, and militant operations in Northeast India.

The NIA had already registered several cases against him as part of its continuing crackdown on insurgent groups in the region.

With custody secured, the agency has reopened d...