Three more cars - a Maruti Suzuka Brezza, Maruti Swift Dzire, and a Ford EcoSport - were being prepped to carry explosive material, sources familiar with the investigation into the blast near Delhi's Red Fort this week told NDTV Thursday. The four cars - including the Hyundai i20 that exploded Monday evening - were supposed to part of a coordinated six-phase attack targeting six locations in Delhi on December 6 - the day the 16th century Babri Masjid in Ayodhya was torn down by a mob.