"Today at 22:55, [07:55 pm GMT] the armed forces of Ukraine made an unsuccessful attempt to attack ships of the Black Sea Fleet with a sea unmanned vessel, [Russian ships were] performing tasks to control navigation in the southwestern part of the Black Sea, 237 km [147 miles] southwest of Sevastopol," the ministry said in a statement.
"In the course of repulsing the attack, an unmanned enemy boat failed to achieve its goal and was destroyed by fire from the onboard armament of the ships of the Black Sea Fleet — the Pytlivyy guard ship and the Vasily Bykov patrol ship."
The Black Sea incident came just as the Russian Defense Ministry confirmed Russia's air defenses had downed a Ukrainian drone in the Belgorod Region that was intended to carry out a terrorist attack "by an aircraft-type drone." Officials indicated that the incident did not cause any damages or casualties.