Kishanganj Sub Divisional Officer (SDO) Mohammad Qasim said the incident happened at Nunia Tola in Dumaria locality of the town and the deceased has been identified as Lakshmi Chauhan (60).
He said while the culprit identified as Munna Chauhan is absconding, his wife Pappu Devi and sister-in-law Ruby Devi have been arrested from Kishanganj bus stand while trying to flee after the crime. They have been charged with being accomplices in the act.
An FIR has been registered on the statement of deceased person's wife Dhaniya Devi, who has named her son-in-law and two daughters in it.
The body has been sent for postmortem and the police is conducting raids to nab the absconder.