A Guardian investigation reveals a significant increase in cocaine trafficking to Europe, directly linked to the growing presence of Latin American criminal networks. These cartels, originating from Colombia, Brazil, Ecuador, Venezuela, Mexico, and the US, have established operations in at least 12 European countries over the past decade. Cocaine seizures across Europe have risen by 471% between 2014 and 2024, demonstrating the escalating problem. The investigation, based on data from police, intelligence agencies, and interviews with legal experts across eight countries, indicates these cartels are forging alliances with local mafia groups. The rise in trafficking is accompanied by an increase in local laboratories processing cocaine derivatives within Europe. This poses a serious threat to European security and necessitates increased cooperation to combat these transnational criminal organizations.