Sweden has opened a preliminary investigation into suspected aggravated “sabotage” and ordered the detention of a vessel in the Baltic Sea suspected of damaging an underwater fiber optic cable connecting Latvia and the Swedish island of Gotland earlier that day.

The Nordic country has opened an investigation into the damage, just weeks after NATO stepped up its military presence in the area following a series of similar incidents.

Swedish authorities boarded a Maltese-flagged ship seized in connection with the latest breach of cables running along the bottom of the Baltic Sea to begin an investigation into the matter, the country's security police said on Monday.

Numerous incidents of suspected Russian-linked sabotage of undersea cables in the Baltic Sea has seen tensions rise among nearby countries, and an increased Nato presence.

Russia has condemned the Western alliance for ramping up its naval presence in the so-called 'NATO lake' after alleged sabotage by Moscow-linked vessels.

A Bulgarian shipping company on Monday denied that one of its ships had intentionally damaged an underwater fiber optic cable connecting Latvia and the Swedish island of Gotland.

Intelligence officials in the U.S. and Europe have suggested that recent incidents damaging critical cables in the Baltic Sea were accidental, according to a Washington Post report. Western geostrategic self-deception has overly emphasized fears of escalation and cornering Russia.

Sweden detained a vessel suspected of damaging a subsea data cable connecting it with Latvia, the third such incident in the Baltic Sea in the past three months.

The Danish PM's tour of three capitals betrayed the nervousness felt in Denmark over Trump's repeated comments.

Swedish authorities are investigating a suspected sabotage of an underwater fiber optic cable connecting Latvia and the Swedish island of Gotland. The investigation involves the National Police Operations Department,

"Workers intend to preserve the damaged pipeline, installing special blinds on each open end of the pipe in order to prevent further gas release and ingress of oxygen-saturated seawater," the regulato