People are dying from extreme heat, which is also killing a large number of chickens and destroying tea plants
Police said the lynching was reported from Chauddagram Upazila's Kalikapur in the wee hours of Sunday.
Chauddagram police's Inspector Subharanjan Chakma said that locals at Bardhanbarhi Village nabbed the man around 2am and beat him to death.
The victim is yet to be identified, but the police say he appears to be in his 30s.
The body has been sent to Comilla Medical College Hospital for autopsy, said the police officer.