The Russian Embassy in Paris has accused France of “piracy” after its naval forces seized an oil tanker in international waters near Madagascar, rejecting claims that the operation complied with international maritime law.

French President Emmanuel Macron announced the detention of the DF Peak on Monday, saying the vessel was suspected of sailing under a false flag and involvement in illegal fuel transportation.

The tanker was intercepted 450 nautical miles south of Reunion, a French island territory east of Madagascar, Macron said.

According to MarineTraffic, the DF Peak sails under Benin’s flag. Macron did not identify the owner but described the seizure as part of France’s campaign to “fight the ghost fleet wherever it may be in the world.”

The Russian Embassy called the operation a “flagrant violation of international law,” dismissing France’s references to maritime regulations and “international sanctions” as a “fig leaf” concealing “outright piracy and robbery.”

The embassy denounced the sanctions as illegitimate unilateral measures and said the French authorities failed to notify Russian diplomats of the seizure. It added that officials are checking whether any Russian nationals were aboard.

Western governments have used the term ‘shadow fleet’ to describe vessels that allegedly help Russia circumvent sanctions on oil exports. Moscow rejects the designation, arguing that it has no basis in international maritime law.

France previously detained the Tagor tanker in the Atlantic in June, and British forces seized the Smyrtos in the English Channel later that month. Moscow condemned both operations as piracy.

In July, the EU adopted a mechanism allowing member states to sell oil and other cargo confiscated from sanctioned vessels. President Vladimir Putin subsequently warned that Russia could retaliate against ships carrying Western cargo.

The latest seizure comes days after Putin and US President Donald Trump agreed to expand Russian diesel supplies to American and global markets in an effort to ease soaring fuel prices.

Washington subsequently issued a temporary sanctions waiver covering Russian diesel trade until April 7, 2027. Trump announced initial deliveries of more than 300,000 tons, followed by another 500,000 tons in November, and 1 million tons thereafter.