Body of a 35-year-old doctor, believed to be an Afghan national, was recovered from a rented accommodation in the Bindapur area of southwest Delhi on Tuesday night.
Police have ruled out any foul play and said that the cause of death would be ascertained only after the post-mortem examination.
"He probably died due to heart attack but we are waiting for the post- mortem report. No injury marks were found on the body," AK Ojha, DCP (southwest) said.
Police sources said the doctor, identified as Salamat Ali, could have died due to suffocation. He was working as a trainee doctor in Sir Ganga Ram hospital and was living in Bindapur.
Hospital sources said that Ali, who came to India six months ago, refused to take the accommodation provided by the hospital.
"He was working as a trainee and although we provide hostel facility to trainees he chose to live on his own," said a hospital source. No case has been registered in the matter till now.