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 vessel suspected of being involved in an earlier underwater sabotage of cables in the Baltic Sea on Monday.

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.

Swedish authorities have seized a ship suspected of damaging a data cable running under the Baltic Sea to Latvia. Prosecutors said an initial investigation pointed to sabotage, and an inquiry has been launched involving Sweden's police, military, and coast guard.

A submarine cable was damaged in the Baltic Sea, the fourth case reported by the Nordic countries in the past two months. View on euronews

Sweden is investigating damage to a data cable linked to Latvia, the latest breach in the Baltic Sea region where European authorities are on high alert.

An undersea fibre optic cable between Latvia and Sweden has been damaged, likely due to external influence, prompting a joint investigation by NATO and Baltic nations. Swedish and Latvian authorities are cooperating to assess the situation and determine necessary actions for the repair and protection of critical infrastructure.

Swedish authorities have seized a ship over the “aggravated sabotage” of an undersea fibre-optic cable linking Latvia with a strategically important island in Sweden.