A subsea data cable that has sustained damage offshore the Swedish island of Gotland in the Baltic Sea remains operational, its Finnish owner said.

The authorities are looking into possible damage to an undersea line east of Gotland island. NATO has stepped up its surveillance of the region.

Swedish authorities are investigating damaged undersea cables in the Baltic Sea, suspecting Russian sabotage. Recent incidents have raised security concerns, prompting the European Commission to propose measures for better protection and threat monitoring in the Mediterranean and Baltic regions,