Sweden says credible reports of foreign submarine in its waters

STOCKHOLM (Reuters) - Sweden released on Sunday a grainy photo of a mysterious vessel in Stockholm's archipelago, as the military hunted for a foreign submarine or divers in the country's biggest such mobilisation since the Cold War.

The search in the Baltic Sea less than 30 miles (50 km) from Stockholm began on Friday and reawakened memories of the final years of the Cold War when Sweden repeatedly sought out suspected Soviet submarines along its coast with depth charges.