Swedish authorities said on Friday they were investigating a damaged cable that was discovered in the Baltic Sea, the latest in a string of recent incidents of ruptured undersea cables that have heightened fears of Russian sabotage and spying in the region.

The breakage was found on a cable that runs between Germany and Finland off the island of Gotland, south of Stockholm, in the Swedish economic zone, the news agency TT reported Friday. The Coast Guard was responding to the site.