A group of about 25 armed rebels, including women, barged into the house of Satar Khan at Nangalbaoard in Sinapali area late last night and attacked him with sharp weapons and rifle bayonet.
As Khan died on the spot, the ultras shouted slogans against the police and security forces and disappeared into a nearby forest, they said.
A poster left by the Maoists at the site stated that Khan was passing on information about naxal activities to the police.
Combing operation and patrolling by the security personnel had been intensified in the area after the incident, they said.