Altogether, four people, including three women, were killed in a family dispute at Sheikhpura lain Supaul market on Saturday under the Biraul police station area.
The subdivisional police officer of Biraul Manish Chandra Choudhary said that after some scuffle, the woman sprinkled petrol in her mother in law and the room of her husband and his second wife lit the fire. The women were also burnt in the inferno.
All the people succumbed during treatment at the hospital. The bodies have been sent for postmortem at Darbhanga Medical College Hospital.