The Russian Defense Ministry confirmed its forces successfully repelled the attack of seven drones and two unmanned surface vehicles near Sevastopol.
"This morning, an attempt by the Kiev regime to carry out a terrorist attack by seven unmanned aerial vehicles and two unmanned semi-submersible boats on objects on the territory of the Crimean peninsula near the city of Sevastopol was thwarted," the ministry said in a statement.
Sevastopol Governor Mikhail Razvozhayev has reported on Telegram in the early hours of Sunday that the Russian port city was attacked by unmanned aerial vehicles (UAVs).
"The air defense forces and the fleet are repelling an attack by enemy UAVs on Sevastopol over the sea around Cape Khersones, Sevastopol Bay and Balaklava," Razvozhayev wrote.
The governor emphasized that all Sevastopol emergency services are on high alert.
At first, Razvozhayev said that a total of eight drones attempted to attack Sevastopol on Sunday, but later he added that another unmanned aerial vehicle (UAV) has been shot down over Manganari cape in the Russian port city in Crimea.
Razvozhayev stressed that the drones caused no damage and there were no casualties.
The movement of passenger ferries and boats in the Sevastopol Bay has been temporarily suspended, according to the local department of transport.
In late June, the Ukrainian armed forces attacked bridges on the administrative border between the Kherson Region and the Crimea near the village of Chonhar using UK-made Storm Shadow cruise missiles.