Victim Dattaram Salaskar (70) was beaten by his son Shailesh on the intervening night of Sunday and Monday, police said.
The injured, who was later admitted in a government run Cooper hospital here for injuries, died yesterday while undergoing treatment, following which a murder case was registered against Shailesh at Andheri police station in the city, police said.
According to police, Salaksar had rung up his brother-in-law Vishnu Parab (71), a resident of suburban Andheri, at 3.30 am on Monday claiming that his son had beaten him up very badly. "Rattled Salaskar told Parab that he would be coming to latter's residence in Andheri," police said.
The victim died yesterday afternoon while undergoing treatment, police said adding that an FIR was registered against Shailesh at Andheri police station.
The reason for the argument between the father-son duo which led to the murder was not yet clear. The case has been transferred to the police station concerned in Thane for further investigation as the incident occurred there, police said.