A couple and their five-year-old son were found dead at their house at a village located under Dinhata-II block of Cooch Behar district on Sunday.

According to police, Manoranjan Sarkar, 52, a casual worker and a resident of Tiyadaha-Kishamat village, hacked his wife Santana, 22, and son Rony, 5, to death and then committed suicide by hanging.

“During preliminary investigation, we have come to know that the couple had differences and would often indulge into fights. On Sunday, as none of the family members came of the house and the doors remained closed till late morning, some locals checked and found them dead inside,” said Sumit Kumar, Cooch Behar district police chief.

The villagers informed police and soon, a team rushed to the spot.

“All three bodies have been sent for post-mortem. Investigations have started,” said a police officer.