A couple and their son were found dead under mysterious circumstances in their residence at Madhyapur Thimi Municipality, Bhaktapur on Friday.

Preliminary investigation showed that 36-year-old Sudip Adhikari, might have killed his 34-year-old wife, Samjhana, and his 15-year-old son, Sushant, before committing suicide.

Police suspect that Sudip might have killed his wife and son with a sharp domestic weapon and then poisoned himself and the family dog.

Information officer at the Bhaktapur Metropolitan Police Range, DSP Dipak Giri, informed that the incident must have occured a few days ago since the bodies had starting to decompose.

Police suspect that the incident was a result of being unable to pay the loans that Sudip had taken from a bank and others.

Sudip’s younger brother, Sunil Adhikari, had informed the police about the incident after he found his brother and family members dead inside the house on Friday. Sunil had gone to Sudip’s house for a visit, but found them lying dead.

Police found the body of Sudip’s son Sushant on his bed in the first floor, his wife’s body in the second floor, and his body in the third floor.

Sushant had been struck three times on the head and his throat was slit. The wife had four deep cuts on her head as per police.

Sudip, however, had no sign of cuts on his body, but there were blood stains on his shirt.

Senior Superintendent of Police Deepak Kumar Thapa of Metropolitan Police Crime Division, Teku, informed that Sudip’s body was reeking of celphus – rat poison, which he had ground into a powder in the kitchen.

“It’s a clear sign he had poisoned himself,” Thapa said, adding that he had also vomited after ingesting the poison.

A packet of celphus was found in a field outside his house.

SSP Thapa also said there was no evidence a third person had entered the house.

Police are awaiting the viscera and post-mortem report of the deceased. The body of the wife and son had already started decomposing by the time police arrived.

Rishi Ram Subedi, DSP at Metropolitan Police Circle, Thimi, said, “He must have killed himself at least one day after killing his wife and son.”

Sudip owed Rs 2.3 million to Agricultural Development Bank Limited, which he had loaned a year ago to construct their home. However, they were having difficulty to pay bank interest as they had no other source of income besides their grocery store.

He used to drink and gamble after losing his job in a pharmaceutical shop, as per police. Sudip was under pressure from the family of his father-in-law to pay back Rs 200,000 that he had borrowed.