Pakistan's customs authority has arrested two of its preventive officers for allegedly replacing 400 kilograms of seized silver bullion with lead bricks during an official transfer. The officers had been tasked with transporting 688 kg of confiscated silver in 36 sealed boxes by air from Quetta to Pakistan Mint Lahore (the state facility responsible for producing the country's coinage and currency), but upon unpacking, 400 kg of the silver was found to have been substituted with fake lead bricks of identical weight and packaging. A first information report has been filed and CCTV footage from Quetta's Safe City surveillance network is said to have confirmed the deliberate swap of the transport vehicle carrying the original silver.