The incident took place in village Milak Puranpur that falls under the Dhampur police station.
Family members of the deceased, Vikram Singh, alleged that persons with whom they had a long-running dispute beat him with sticks and then strangulated him.
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Circle Officer Sushil Kumar, however, said there were no signs of any injury on the body.
Dhampur Police Station In-charge Rajesh Kumar Chauhan reached the spot and sent the body for a post-mortem.
A case of culpable homicide not amounting to murder has been registered, Kumar said.
The real cause of death will be known only after a post- mortem, he said.