Apparently in an inebriated state, Moti Manjhi beat up his parents and sister with a stick after finding that the dinner was not ready last night.
Moti's father Jago Manjhi died on the spot, police said.
Manjhi's mother Pachia Devi has lodged an FIR charging her son with the murder of her husband.
Manjhi is absconding, the sources added.
