Superintendent of Police Devnarayan Patel, 40, and his wife,35, are dead. Their daughter, 11, and son, 8, were both shot in the chest and are in a hospital in Raipur, 300 km away.
Mr Patel, a decorated officer who received the President's award last year for a successful anti-Maoist operation, was suspended yesterday after he allegedly slapped a district court judge on a road.
On Sunday, the officer reportedly saw the judge's car blocking traffic and confronted him. In the argument, the judge, A Toppo, allegedly abused the cop, who reportedly slapped him not knowing that he was a judge.
Under pressure to take action, the police suspended Mr Patel on Monday evening.
The officer was reportedly very upset and hours later, at around 2 am, used his service weapon to shoot his family before killing himself. No suicide letter has been recovered yet.
He had been transferred to this post just six months ago.