Kanu Sanyal, one of the founder members of Naxalite movement, was found hanging at his residence at Seftullajote village, 25 km from here, today.
78-year-old Sanyal, a bachelor, was suffering from old-age related ailments.
The body has been sent for post-mortem, Inspector General of Police (North Bengal) K L Tamta said.
Sanyal was a founder of the Communist Party of India (Marxist-Leninist) formed in 1969.
The Naxalite movement started from Naxalbari, a small village in North Bengal on May 25, 1967. It was led by Charu Majumdar and Sanyal.