An ULFA self styled 'sergeant major' was killed in an encounter with a joint police and army team in lower Assam's Kokrajhar district on Sunday.
On a tip off about the presence of the insurgent at Chandrapara village, the security forces cordoned off the area and asked him to surrender,
official sources said.
The ULFA insurgent fired at them and in the retaliatory fire he was shot dead, the sources said.
A 9-mm pistol, six rounds of ammunition, an AK-47 rifle magazine and four fired empty bullet cases were recovered from the slain ultra identified as Maheswar Rai alias Abhijit Mech, they added.