Red Fort Blast News: NDTV has accessed exclusive video showing the white Hyundai i20 - now at the centre of the Delhi blast probe - undergoing a pollution test on October 29th, just days before the explosion. Three people were present at the time, including a bearded man suspected to be Tariq, in whose name Dr. Umar bought the car. Investigators say the vehicle changed hands seven times before being used in the 10/11 blast outside the Red Fort. The Haryana car dealer who last sold it has been detained as agencies trace how this ordinary i20 became a weapon of terror.