A 47-year-old man who used to stay alone in Salt Lake's BJ block was found dead on Sunday, police said.

A resident of BJ block said Joydip Banerjee, who died, used to work for a company in Sector V.

The caretaker of Banerjee’s house had knocked on the door repeatedly but he did not open, an officer of the Bidhannagar commissionerate said.

According to the officer, the caretaker thought Banerjee was sleeping and went to the nearby block market to buy groceries and vegetables.

"He returned after some time and again knocked on the door multiple times. As Banerjee did not open the door, the caretaker alerted neighbours. The neighbours, too, knocked several times before contacting the police,” the officer said.

A team from Bidhannagar East police station went to the house and broke open the main door. The team went inside and found Banerjee hanging in one of the rooms.

They brought him down and took him to the sub-divisional hospital in Salt Lake, where he was declared dead.

Several residents of BJ block who entered the house with the police said a suicide note was recovered. The police, however, did not comment on the issue.

"We have sent the body for post-mortem,” said a senior officer of the commissionerate.