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 lines, 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.

The European Union will propose sanctions against Russia's shadow fleet following the damage to undersea cables in the Baltic Sea. Source: a joint statement by the European Commission and Kaja Kallas,

Damage to the power cable in the Baltic Sea is the latest in a spate of murky disruptions to undersea cables that have put European authorities on high alert.

The Eagle S, an oil tanker suspected of being part of Russia's shadow fleet, has been stopped and boarded by Finnish authorities in relation to the damaging of power and data cables connecting Finland to Estonia.

Finland’s leaders are calling for more NATO protection against alleged Russian sabotage of critical infrastructure.

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,