The incident occured at Ahinsa circle under Subhash Nagar yesterday where Prem Shankar and his son Shyam beat up Shankar Lal Jat, police said today.
Jat was rushed to a hospital where he was declared brought dead.
The daughter of Prem Shankar was allegedly raped by Shankar a few days ago and an FIR in this connection was lodged on Thursday, the police said, adding that the father and the son duo were absconding.