New Delhi, July 7 -- A part of a car's broken bumper and a meticulous investigation spanning over a period of six days helped Delhi Police nab a radio jockey who had allegedly mowed down a scooter rider on Raisina Road on June 30. Investigators said they shortlisted at least 2,500 Hyundai Creta cars, the kind that was involved in the mishap on June 30, and analysed footage from at least 100 CCTVs before nabbing the suspect on Saturday morning. Police said that the suspect, 34-year-old Ankit Gulati, was "drunk and watching a video on his mobile phone" when he allegedly ran over Dheeraj Kumar, a Lok Janshakti Party worker, with his SUV....