Russia's Federal Security Service (FSB) announced that it prevented an act of sabotage by the Ukrainian special services at an energy infrastructure facility in Crimea.

"A sabotage planned by the Ukrainian special services at an energy infrastructure facility in the Republic of Crimea was prevented. As a result of a complex of operational and search measures, a citizen of Ukraine was detained," the FSB said in a statement. 

Three explosives, in addition to instructions for their use and a diagram of the location of power transmission towers in one of Crimea's regions were seized during the detention, according to the statement. 

On Monday, the Ukrainian armed forces used Western-made drones to attack the Russian Black Sea Fleet. 

According to The New York Times journalist Andrew Kramer, who is in the Kherson region, "The new capabilities were on display in the predawn hours Saturday when Ukrainian drones hit a Russian vessel docked in the Black Sea Fleet’s home port of Sevastopol."

"With this attack, Ukraine has proven that Western arms supplies are at their peak at the moment," Kramer added.

Moreover, the Russian Defense Ministry retrieved from the bottom of the sea and examined fragments of drones used to target Russian Black Sea Fleet ships and infrastructure near Odessa, the Ministry revealed on Monday.

Russia accused Ukraine and Britain of carrying out a drone attack on its navy in the Black Sea, which caused "minor damage" to one of the ships.

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