Two Russian military ships in the Black Sea were damaged following an attack, Kiev announced

Ukraine's military intelligence agency, HUR, said on Saturday that it attacked and damaged two ships used by the Russian army in the Black Sea, informs DPA, quoted by Agerpres.

The railway ferry Slavianin was taken out of service, while the Avantgarde was damaged, HUR said on Telegram.

Both ships were mainly used to run between mainland Russia and the Crimean Peninsula, which Moscow illegally annexed in 2014, the agency said.

They were part of Russia's military logistics network and had been used to transport weapons, military equipment and ammunition, according to HUR.

The ships were targeted as part of an attack on the Black Sea port of Kavkaz. The infrastructure of the port was also damaged during the operation.

Images published by HUR suggest the attack was carried out by a drone.

Russian authorities acknowledged damage to the port and a ship earlier on Saturday morning, but did not provide details.