In November 2020 Swedish Customs stopped three container loads of marble slabs from Morocco in the port of Gothenburg and found 1,200 kilograms of cannabis resin hidden in fake slabs mixed among the real ones.[1][2] The shipment was addressed to a company in Kungälv; customs officers watched a controlled delivery and found the load re-routed to a company in Kinna, where they arrested representatives of both firms plus two more people who had handled parts of the haul.[1] The seizure was the largest cannabis seizure Swedish Customs had ever made, valued first at about 100 million kronor and later at about 120 million.[1][2]

Five people went on trial at Gothenburg District Court in April 2021.[2] Two defendants were later sentenced to seven and seven-and-a-half years in prison for particularly serious drug smuggling.[1] Encrypted-phone material recovered in the international Trojan Shield operation implicated more people: another man was sentenced to nine years in 2022, and two more were charged in March 2023.[1]