Estonian naval ships are taking part in stepped-up patrols in the Baltic Sea by NATO countries after undersea power and communications cables have been damaged in recent months.

"Ruptures of undersea cables that have rattled European security officials in recent months were likely the result of maritime accidents rather than Russian sabotage, according to several U.S. and European intelligence officials,

The incidents contributed to mounting European fears of sabotage, as NATO officials accuse Russia of a growing “destabilization campaign” over their military support for Ukraine and sanctions against Moscow.

NATO warships began patrolling the Baltic Sea this week. Some of the ships are anchored in Tallinn's Mine Harbor, ERR reports. Warships have begun patrolling as part of the Baltic Guard program. Three NATO ships anchored in Tallinn.