A 26-year-old man suffering from depression allegedly committed suicide by consuming sulphas tablets at his house in south Delhi's Fatehpur Beri area, police said on Monday.
The deceased was identified as Neeraj, they said.
No suicide note was recovered, police said.
The matter was reported on Saturday after police were informed by hospital authorities about admission of a victim with the history of unknown poisoning.
According to the police, Neeraj consumed sulphas tablets and complained of vomiting on Saturday morning and was taken to a private hospital where he died.
"During enquiry, it was revealed that his father is suffering from cancer and Neeraj was under depression. He had started a dhaba in Gurgaon but could not continue the business. He also worked as bouncer for some time. He had not been working for last three-four months," said Deputy Commissioner of Police (South) Atul Kumar Thakur.
The body was handed over to family members on Monday after post-mortem at AIIMS, he said.