An undersea fiber optic cable between Latvia and Sweden was damaged on Sunday, likely as a result of external influence, Latvia said, triggering an investigation by local and NATO maritime forces in the Baltic Sea.

An undersea fibre optic cable between Latvia and Sweden was damaged on Sunday morning, probably as a result of “external influence”, LSM, the Latvian public broadcaster, reported, citing the cable operator.

In a troubling incident, an important undersea data cable connecting Sweden and Latvia was found damaged in the Baltic Sea. This disruption has raised alarms, prompting Swedish authorities to start a criminal investigation into the matter.