CNN —Russia has a fleet of suspected spy ships operating in Nordic waters as part of a program for the potential sabotage of underwater cables and wind farms in the region, according to a joint investigation by the public broadcasters of Sweden, Denmark, Norway and Finland. The investigation also said Russian ships appear suddenly following NATO exercises. One ship at the center of the investigation, the Admiral Vladimirsky, is officially used for underwater research expeditions, but is, according to the report, a Russian spy ship. A masked man emerged on the deck of the Admiral Vladimirsky, the ship at the center of an investigation that found a Russian fleet of suspected spy ships in Nordic waters. The investigation comes after Dutch intelligence officials warned Russia had tried to gain intelligence to prepare for the potential sabotage of critical infrastructure in their patch of the North sea.

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