The Delhi Police's investigation into the murder of an elderly physician in southeast Delhi's Jangpura area has revealed that he was brutally tortured and hit on the head with a blunt object before being strangulated with a leash, officials said on Saturday.

Yogesh Chandra Paul, a 63-year-old physician, was found dead in his home in Jangpura Extention on Friday. Paul's body was found with his hands tied, they said. The police accessed footage from a CCTV camera near Paul's house that showed four suspects. A police officer aware of the investigation said one suspect stood outside while the other three entered the house. The accused beat up Paul, gagged him and tied him to a chair.