Swedish authorities released a tanker sanctioned by the European Union after investigators said they found insufficient evidence that it caused an oil spill in the Baltic Sea.
The Swedish Coast Guard said the 12-kilometer (8-mile) spill was discovered on Thursday. The Flora 1 and its 24-member crew were boarded and detained on Friday on suspicion that the vessel was responsible.
The coast guard said investigators also established that Cameroon had confirmed the tanker was sailing under that country’s flag, which had been unclear when the vessel was stopped.
The Flora 1 was placed on the European Union’s sanctions list for carrying Russian oil while “practicing irregular and high-risk shipping practices.” The coast guard said such practices can include turning off the automatic tracking system that transmits a vessel’s location to other ships.
The sanctions target a “shadow fleet” that emerged after the Group of Seven democracies imposed a price cap on Russian oil intended to limit revenue funding Russia’s invasion of Ukraine. The cap was enforced by barring insurance and shipping companies from handling oil sold above the limit.
According to the Ukrainian government, the Flora 1 was owned by a Hong Kong company as of late 2025 and had also been sanctioned by the United Kingdom, Canada, Australia, Switzerland, New Zealand, and Australia. It had changed its name six times and its flag country nine times.