New Delhi, Sept. 14 -- The Delhi Police crime branch on Saturday said it had cracked a highway theft in which four men posing as bank officials allegedly drugged a truck driver and stole about 6,000 kg of copper scrap worth roughly Rs.55 lakh near Signature Bridge in northeast Delhi's Khajoori Khas on Tuesday morning. Investigators later arrested four people-including the driver himself-for staging the heist to sell the copper on the grey market, and said the entire consignment had been recovered.

The accused were identified as Arun Soni, a scrap dealer and alleged mastermind; Manish Kumar, the truck driver and key conspirator; Aditya Shah, a friend of Kumar; and Ramzan Ali, who administered the injection. According to deputy commissione...