Finnish police are investigating whether a Russian ship was involved in the sabotage of an electricity cable running between Finland and Estonia.

The authorities said on Thursday that they believe the anchor of the Eagle S, a tanker registered with the Cook Islands, may have damaged the Estlink 2 cable, which became disconnected on Wednesday.

The vessel is thought to be part of Russia’s “shadow fleet”, which is made up of ships that carry embargoed Russian oil products.

It is the latest in a series of incidents in recent years, in which underwater cables in the Baltic region have been either damaged or severed completely.