A National Police operation has seized more than 4 million € in cash and a treasure trove of gold ingots from a group of drug traffickers based in the north west of Madrid which was finalising a deal to sell off half a ton of cocaine. Three suspects from Colombia have been arrested, who also face charges of money laundering. The Interior Ministry said in a press release on Tuesday that the drugs were brought into Spain by air and the laundered proceeds from their sale were then sent to Colombia in the same way. Police began their investigations last month and swooped on the luxury apartments which were used by the gang early on the morning of January 5, seizing more than 3.5 million € and three kilos of highly pure gold. The gold was made up of ingots each weighing a quarter of a kilo. A further half a million € was discovered when the suspects’ vehicles were searched.