Russia struck the Kremenchuk oil refinery in the central Poltava region of Ukraine in an overnight drone attack, causing a fire, Governor Dmytro Lunin said on Wednesday.

Russia's air defence systems destroyed Ukraine-launched drones over the Belgorod and Oryol regions late on Monday, the Russian defence ministry said, with local officials saying that there was no destruction or casualties.

There has been a spike in recent weeks of attempted drone strikes in parts of Russia for which Moscow has blamed Kyiv, although Ukraine has not admitted responsibility for most of the incidents. When examined by members of Russia's National Guard on Sunday,

Ukraine said Thursday its air defence systems had brought down three dozen Russian cruise missiles overnight in Moscow's latest barrage that left dead and injured throughout the country.