The rhino had entered Pahumaragaon village in Majuli island. When the villagers were trying to drive it away, the rhino attacked them killing one of them after lifting him off with its horn and trampling him to death, police said.
The victim was identified as Puaram Nath, police said.
The villagers roughed up the forest department personnel who come to the spot alleging that Nath was killed as they arrived late despite being informed several hours earlier about the movement of the rhino.