A Russian navy sub is at risk of explosion in European waters amid a serious fuel leak onboard, according to reports.

The 242ft Kilo-class submarine Novorossiysk, which is capable of carrying Kalibr missiles, is suffering from a serious technical problem.

The vessel was spotted yesterday in the Strait of Gibraltar off the Mediterranean Sea.

Now a Telegram post by the Russian channel VChk-OGPU claimed that the submarine has no spare parts for repairs or a qualified specialist crew to fix the issue. With fuel accumulating in the hold, the crew may have no choice but to pump it into the sea, it added.

Part of Russia’s Black Sea fleet, Novorossiysk is not thought to be involved in the war with Ukraine, the Sun reported.

Earlier this year, Royal Navy helicopters and a warship tracked the s

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