On April 3, 2026, the Swedish Coast Guard boarded the Flora 1 near the island of Gotland, following reports of an oil spill that spanned approximately 12 kilometers in the Baltic Sea. The Flora 1 is believed to belong to a clandestine fleet of aged Russian tankers used to circumvent sanctions amid the ongoing conflict in Ukraine.

The vessel was sailing from the Russian port of Primorsk toward Santos, Brazil, carrying oil when the spill was detected. Reports indicate that the ship had an unclear flag status, previously operating under the flags of both Benin and Cameroon at different times. This inconsistency raises concerns as the tanker is associated with a network of vessels that pose serious environmental threats due to their poor condition and lack of insurance.

Swedish authorities launched a preliminary investigation into the environmental impact of the spill, with two crew members being interrogated regarding their potential roles in the incident. Civil Defense Minister Carl-Oskar Bohlin emphasized the importance of safeguarding the sensitive Baltic ecosystem, stating, "Intervening against ships that pollute is part of the Coast Guard's everyday work."

The seizure of the Flora 1 forms part of a broader European effort to combat illicit oil shipments from Russia, as countries ramp up their response to environmental and security challenges posed by the ongoing sanctions. While the spill itself is considered minor, Bohlin noted that larger incidents could have dire consequences for marine life and the surrounding coastal environments.

Following the seizure, the ship was taken to an anchorage near Ystad, where it will remain under watch pending further investigations. The ongoing scrutiny of Russia's shadow fleet highlights the increasing tensions in the Baltic region amid the war and the complexities surrounding maritime operations.