Delhi Police officers investigating the September 7 bombing of Delhi High Court stumbled upon a car laden with explosives after they were tipped off about a possible terrorist attack at Ambala Cantt railway station. Special Cell officers who reached Ambala at around 6.30 pm on Wednesday found the Indica car at the parking lot of the station. It had apparently been there at least since the afternoon,being watched over by Haryana Police officers,who had been informed about the tip-off. The registration number of the car matched the one that the Special Cell had. The officers lay in wait,hoping for someone to show up. After waiting for over five hours,just before midnight,they decided to inspect the car. In it they found explosives,detonators and a timer device. At the time of going to press,the bomb squad was inspecting the car. Police sources said the explosive about five kg could be RDX. The Haryana Police had set up barricades across Ambala town. The registration number of the Indica HR 03 0054 had been found to be fake.