Russian ship hit in Novorossiysk, Black Sea drone attack, Ukraine sources say

A Russian naval ship has been damaged in a Ukrainian naval drone attack in the Black Sea, Ukrainian sources say.

The assault reportedly occurred near the Russian port of Novorossiysk, which is a major hub for Russian exports.

Russia's defence ministry said it had repelled a Ukrainian attack on its naval base there which involved two sea drones, but did not admit any damage.

But Ukrainian security service sources say the Olenegorsky Gornyak was hit and suffered a serious breach.

They told the BBC a sea drone was carrying 450kg (992lb) of dynamite when it hit the ship.

Russia made no mention of any damage in its report of the incident.

Sea drones are small, unmanned vessels which operate on or below the water's surface.