New Delhi, Sept 13: A doctor was found dead at his residence at Dabri extension in South-West Delhi late last night, police said today. D P Dev (60), hailing from Samastipur in Bihar, was a practitioner of naturopathy and lived in a rented room on the fourth floor of a building in the area, they said. Preliminary investigation showed that the deceased was hit on the head with some heavy object and was declared brought dead at the Deen Dayal Upadhyay Hospital, police said adding investigation is on. Bureau Report