A Punjab police constable Kulwinder Singh shot dead his wife and three members of his in-laws family with an AK-47 rifle at Said Jalalpur village of Dharamkot block in Moga district on the intervening night of Saturday and Sunday, police said.

A 10-year-old daughter of his brother-in-law was also injured in the incident.

At the Moga civil hospital, the constable’s wife Rajwinder Kaur, mother-in-law Sukhwinder Kaur and brother-in-law’s wife Inderjit Kaur were declared brought dead. His brother-in-law Jaskaran Singh succumbed to his injuries during treatment while his daughter is under treatment, police said.

The police have arrested the accused and a case has been registered at Dharamkot police station. Kulwinder was posted at Dharamkot in the tear gas squad and the AK-47 rifle used in the incident was issued against his name.

According to preliminary investigation, he had a land dispute with his in-laws who were trying to settle the matter. Kulwinder along with wife had reached his in-laws house on Saturday. He allegedly got drunk and had an argument for some time after which he fired at them with his rifle in a fit of anger.

Moga’s Superintendent of Police (Investigations) Harinderpal Singh said that investigation is under process and a case has been registered.

The head constable, who is part of anti-riot squad, earlier faced suspension for firing into the air with his service rifle.

Besides wife, Kulwinder Singh allegedly shot dead three members of his in-laws family in Said Jalalpur village in Dharamkot subdivision of Moga district on Sunday. He later surrendered before the police.

Police said the accused had a property dispute with his in-laws. After an altercation, he opened fire, killing all of them on the spot.

Kulwinder Singh also fired at his brother-in-law’s daughter Jaspreet Kaur (10), who survived bullet injuries.

The deceased have been identified as his wife Rajwinder Kaur, brother-in-law Jaskaran Singh, sister-in-law Inderjit Kaur and mother-in-law Sukhwinder Kaur, the police said.