Hemanta Mahato (20) came to Nedabahara village to take part in a rally organised to protest against yesterday's arrest of Gram Panchayat member and Jharkhand Mukti Morcha (JMM) leader Sukumar Murmu.
Following an altercation, irate villagers beat Mahato to death fearing violence during the rally, Jhargram superintendent of police Bharati Ghosh said.
Murmu was arrested by the police yesterday after a landmine device was recovered from his residence.
Mahato, a prominent Maoist, had three police cases pending against him, Ghosh said.