"During the past night, active air defense systems intercepted and destroyed 33 UAVs over the Republic of Crimea and two over the Bryansk Region during the Kiev regime's attempt to carry out terrorist attacks with the use of unmanned aerial vehicles on facilities on the territory of the Russian Federation," the ministry said in a statement.
The ministry added that active firepower in the waters of the Black Sea destroyed ten uncrewed boats that were trying to make it to Crimea.
Earlier on Thursday, Sevastopol Governor Mikhail Razvozhayev said on Telegram that the Russian military in the city repelled an attempted attack by a drone boat, adding that it was destroyed.
Andrei Kravchenko, the mayor of the Russian city of Novorossiysk, also said on Thursday that the city was in danger of an attack by unmanned boats, with sirens sounding in the city. He called on citizens to remain calm and trust only official data.