Several cities on the peninsula were subject to attack overnight, according to local officials. At least four people have been killed and ten others wounded in Ukrainian drone attacks on Crimea, local governor Sergey Aksyonov has said.

One person was killed and three others were wounded during a drone attack on a suburban train traveling from Azovskoye to Kerch, Aksyonov wrote in a post on Telegram on Thursday morning. The strikes damaged several “nonresidential facilities” in the city of Simferopol, killing at least three people and injuring seven others.

The Crimean port city of Sevastopol, home to the headquarters of the Russian Black Sea Fleet, was also attacked overnight, according to its governor, Mikhail Razvozhayev.

At least 20 incoming Ukrainian drones were shot down by air defenses, with two incidents of drone debris falling in residential areas. No injuries were reported from these incidents.

The Russian Defense Ministry has reported that 272 drones were intercepted and destroyed over several regions of the country on Thursday morning, including Belgorod, Bryansk, Volgograd, Voronezh, Kursk, Nizhny Novgorod, Orel, Rostov, Ryazan, and Tambov.

The attack on Crimea came less than a day after a Ukrainian strike on a passenger bus en route from Moscow to Simferopol while traveling through the Donetsk People’s Republic (DPR), which killed eight civilians and injured 11 others. Russian authorities are investigating this incident as an act of terrorism.

On May 24, Moscow launched a large-scale missile and drone attack against military-related targets in Ukraine, among other things deploying intermediate-range hypersonic Oreshnik systems. Another major Russian raid took place on Tuesday, targeting defense industry facilities in Kiev, parts of Zaporozhye and Kherson regions still under Ukrainian control, as well as Dnepropetrovsk, Poltava, Khmelnitsky, and Sumy regions.