NDTV has accessed the pollution certificate of the white Hyundai i20 used in last week’s explosion near the Red Fort. The car, registered in Haryana, was seen in CCTV footage undergoing a pollution check at an Okhla station on October 29 — barely two weeks before the blast that shook central Delhi. Investigators say the vehicle changed hands multiple times before being used in the attack, as forensic teams examine fragments recovered from the site.