Spanish authorities have impounded a yacht that is believed to belong to Igor Sechin, the chief executive of Russian oil giant Rosneft.
Spain's Transport Ministry confirmed that the yacht had been impounded but not the ownership.
The ministry said in a statement late on March 16 that the 135-meter-long yacht cannot leave the port of Tarragona while Spanish authorities determine if it "belongs or is under the control of" someone on the EU sanctions list.
The yacht, named the Crescent, sails under the flag of the Cayman Islands and has been docked in Tarragona, a port city down the coast from Barcelona, since November, the ministry said.
Sechin is on the European Union's list of Russian tycoons and politically connected people targeted by sanctions imposed in response to Russia's invasion of Ukraine on February 24.
Another yacht thought to belong to Sechin, who was hit with EU sanctions on February 28, was seized by French authorities on March 4.
The Crescent is the third yacht suspected of belonging to a Russian oligarch impounded by Spanish authorities since the sanctions were imposed.
Spanish Prime Minister Pedro Sanchez announced on March 14 that police had impounded an 85-meter-long yacht in Barcelona. That yacht is named Valeria and it belongs to Sergei Chemezov, who heads the Russian defense firm Rostec.
Authorities on March 15 impounded a yacht called Lady Anastasia on the Mediterranean island of Mallorca that reportedly belongs to Russian tycoon Aleksandr Mikheyev, the head of weapons exporting group Rosoboroneksport.
Authorities in Italy and France have also impounded yachts with links to Russian oligarchs as part of Europe's efforts to pressure Russian President Vladimir Putin to pull back from his invasion of Ukraine.