Additional Superintendent of Police J P Pandey said that Guru Prasad Mishra (58) used to move RTI applications on development works done by village head Triloki Nath in the village and recently staged a dharna at district headquarters.
According to complaint given by Mishra's family members, Triloki along with his brothers and sons attacked their house and brutally assaulted Guru Prasad.
They alleged that Mishra, who sustained serious injuries, died while being taken to the hospital.
The ASP said that raids were being carried out to arrest the accused.