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.

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.

STORY: The seized oil tanker accused of sabotaging an undersea power cable and four internet cables now sits off Finland's coast.Finnish investigators said the ship that has been linked to Russia may have caused damage to the cables by dragging its anchor along the seabed,

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.

Estonia has stepped up naval patrols to protect remaining interconnector to Finland as Nato chief promises more protection.

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.

A power cable connecting Finland and Estonia under the Baltic Sea suffered a power outage on Wednesday, prompting an investigation.

Separately, Estonia began patrols to protect an undersea cable supplying electricity from Finland following the damage caused on Christmas Day.

NATO Secretary General Mark Rutte has said that the Alliance will increase its presence in the Baltic Sea following an incident involving damage to electric cables. Source: Rutte after a conversation with Finnish President Alexander Stubb,