Lal Bauri (48) was beaten to death by the mob at Bashbari Tea Division of Sokolating Tea Estate in the wee hours, said Additional Superintendent of Police (Headquarters) Gunindra Deka.
The assailants put his body inside a sack and threw it in the nearby Kakodunga river beside NH-37 within the limits of Pulibor police station, Deka said.
The people suspected Bauri of practising witchcraft leading to the death of the 22-year old Deepanjali Tanti, a neighbour of Bauri, the police said.
Bauri, father of eight sons, had come out to meet the people and to clarify that he was not involved in the girl's death or sorcery, but the mob hit him with sharp weapons, sticks and axe leading to his death, the police said.
On receiving information about the incident, the police with the help of SDRF recovered Lal's body from the river, they said, adding that an extensive search operation was on to trap the culprits as the police managed to pick up one Utpal Oriya while all others were absconding.
