Sushanta Roy of Vivekananda Colony locality was found hanging in a room of his house while his wife Priti (32) and son Sandip (4) were found dead with their throat slit in another room of this morning.
Sandip was physically challenged and he cannot walk or speak properly. His father had a medicine shop.
Police suspect that Sushanta killed his wife and son because of some family problem and then hanged himself.
After being informed by neighbours who found the bodies through the window, policemen broke into the house and recovered the bodies.
Sushanta's mother Mina Roy had gone to a relative's home and returned after listening to the incident.