Sweden has confirmed that a small foreign submarine illegally entered its waters off the coast of Stockholm last month. Military officials said the nationality of the intruders can not be confirmed, but several  defense analysts say Russia remains the likely culprit. Russian media has in turn responded by claiming that it was a NATO submarine, and accusing the Swedes of cowardice and deliberately keeping the nationality a secret. Proof: An image of the seabed off the coast of Stockholm which was provided as evidence of foreign submarine activity at today's press conference The Swedish Armed Forces' Commander-in-chief Sverker Göranson confirmed the violation during a press conference this morning, held with Prime Minister Stefan Löfven and Defense Minister Peter Hultqvist.
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Foreign submarine violated Swedish borders, government confirms
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Which country was behind illegal intrusion is still unclear
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Russian media responded by claiming it was a NATO sub
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Comes after initial denial that breach had been made by submarine
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More than 200 troops, ships and helicopters involved in hunt last month
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Several sources said at the time that  the submarine was Russian
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