Finnish investigators probing the damage to a Baltic Sea power cable and several data cables said they found an anchor drag mark on the seabed, apparently from a Russia-linked vessel that has already been seized.

Finnish police said on Sunday they had found tracks that drag on for dozens of kilometres along the bottom of the Baltic Sea where a tanker carrying Russian oil is suspected of breaking a power line and four telecoms cables with its anchor.

Finnish investigators probing the damage to a Baltic Sea power cable and several data cables said they found an anchor drag mark on the seabed, apparently from a Russia-linked vessel

General Mark Rutte says the military alliance will step up patrols in the Baltic Sea area as Finnish investigators work to establish whether a ship linked to Russia sabotaged undersea cables there this week.

The cable breaks in the Baltic Sea could be a deliberate act, the Norwegian prime minister said, according to the local media on Monday. “The reports of cable breaks in the Baltic Sea are very serious and worrying. It could be a deliberate act, a hybrid threat,” Jonas Gahr Store told the daily Verdens Gang.

NATO said on Friday it would boost its presence in the Baltic Sea after the suspected sabotage this week of an undersea power cable and four internet cables, while alliance member Estonia launched a naval operation to guard a parallel electricity link.

Police and media reports say that Finnish authorities have detained a Russia-linked ship as they investigate whether it damaged a Baltic Sea power cable and several data cables.

This photo provided by Rajavartiosto (Finnish Border Guard) on Thursday, 26 Dec 2024, shows the oil tanker Eagle S, background, and the Finnish Border Guard ship Turva.