Finland’s national energy agency Fingrid has requested that authorities seize a tanker suspected of deliberately damaging an undersea power cable that connects Finland with its fellow EU and NATO member state Estonia.

The EstLink 2 cable between Finland and Estonia in the Baltic Sea was damaged on December 25th along with four telecom lines. Suspicion fell on the Eagle S oil tanker, accused of causing the damage by dragging its anchor along the seabed.

The Eagle S, owned by a company in the United Arab Emirates and registered in the Cook Islands, is suspected of being part of a ‘shadow fleet’ of ships that circumvent EU sanctions imposed on Russian oil. Moscow has said Finland’s seizure of the ship is not a matter for Russia.