The Crimean Wind channel published footage of a fire and explosion on an unknown ship off the southern coast of Crimea, east of Alupka, UNN reports .
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Local residents reported hearing machine gun fire preceding the explosion. One of the Russian warships was allegedly damaged or destroyed.
Eyewitnesses report that two Mi-8 helicopters are flying low over the sea along the coast from Alupka to Katsiveli and back.