The fire out in the house of one Bablu Kushwaha late last night. Bablu's wife Mamta (30) and their son Gaurav (3) were killed in the fire while another son Shiva (8) suffered burn injuries, SP Rajesh Singh said.
The bodies were handed over to family members after the post-mortem and the injured boy is being treated at the district hospital.
The cause of the fire has not been ascertained yet.