French authorities have taken into custody the captain of the tanker Grinch after the vessel was intercepted in the Mediterranean, amid suspicions it was operating under a false flag and linked to Russia’s so-called shadow fleet.
The oil tanker was intercepted in the Mediterranean Sea between Spain and Morocco on 22 January by a French Navy and diverted to an anchorage off Marseille, where it remains under naval guard.
According to French prosecutors, the 58-year-old captain, an Indian national, was detained as part of a preliminary investigation focused on the validity of the ship’s flag and navigation documents. The vessel had been sailing under the Comoros flag, but French authorities and maritime databases raised doubts about the legitimacy of this registration, suggesting the tanker may in fact be stateless under international law.
The remaining crew members, all also Indian nationals, have not been detained and continue to stay aboard the vessel while investigators conduct document checks and interviews under supervision.
Authorities confirmed that Grinch departed Murmansk in early January carrying Russian crude oil. Maritime security analysts believe the tanker has previously operated on routes supplying Russian oil to Syria, a trade lane dominated by sanctioned and aging tankers operating outside mainstream Western maritime insurance and compliance frameworks.
Under international maritime law, stateless or falsely flagged vessels may be boarded and inspected, providing the legal basis for the French operation. Officials described the boarding as a flag verification action, which ultimately “confirmed doubts regarding the regularity of the flag.”
