At least three people were killed in Russia’s overnight attacks on Kyiv, Ukrainian officials said on Friday.

Mayor Vitaliy Klitschko said Russia carried out “massive” strikes on the Ukrainian capital, which left at least 26 people injured.

Tymur Tkachenko, the head of the city’s military administration, said residential buildings came under fire in “practically every district”.

Volodymyr Zelensky said on Friday that Russia had launched around 430 drones and 18 missiles in overnight attacks.

"This was a deliberately calculated attack aimed at causing maximum harm to people and civilian infrastructure," the Ukrainian president wrote on X.

"Ukraine is responding to these strikes with long-range strength, and the world must stop these attacks on life with sanctions."

Russian air defence forces shot down or intercepted 216 Ukrainian drones overnight, the Defence Ministry said.

The ministry said it had brought down 66 drones over Russia's southern Krasnodar region, where officials earlier said an oil depot and port had been targeted.

The governor of Russia's Saratov region said that drone attacks had damaged civilian infrastructure, while the head of the Volgograd region said that air defences had repelled an overnight drone attack on energy infrastructure.

Russia's FSB security service said that it had thwarted a Ukrainian plot to assassinate an unnamed top Russian government official and accused Kyiv of planning similar attacks in other parts of the country.

The FSB said in a statement that the Ukrainian plot had aimed to kill the official when they visited their relatives' graves at a Moscow cemetery.

Reuters could not independently verify the FSB's assertion, but Ukraine has targeted Russian military and other officials inside Russia since Moscow sent tens of thousands of troops into Ukraine in February 2022.

Russia is preparing for a “big war” in Europe as soon as 2029, Volodymyr Zelensky warned in an urgent message to Ukraine’s allies.

Posting on X, the Ukrainian president called for the international community to double-down on sanctions on the Russian economy and weapons to “decrease their capabilities”.

He wrote: “Given the situation on the battlefield, we don’t see Russia wanting to stop.

“The problem is that when we look at the Russian military industry, we see that they are increasing their production. In our assessment, they want to continue this war.”

At least one person killed and 15 were injured in Russian airstrike on Kyiv, reported AFP citing Ukrainian emergency services.

“More than 40 people have been rescued” as several district across the city were attacked.

A pregnant woman was among those hospitalised along with a man who is in a critical condition.

Russian forces launched a "massive" drone and missile attack on Kyiv early this morning, officials said, striking buildings and triggering explosions and fires.

"Air defences are in action in Kyiv," Kyiv mayor Vitali Klitschko wrote on Telegram.

"The enemy is staging a massive attack on the capital. Remain in shelters."

Klitschko said falling debris had struck a five-storey apartment building in Dniprovskyi district on the east side of the Dnipro River and a high-rise dwelling was on fire in Podil district on the opposite bank.

A fire broke out on the roof of an apartment building in another district and debris landed on a school in the east of the city.

Tymur Tkachenko, head of Kyiv's military administration, said both drones and missiles had been deployed on the capital.

Tkachenko and Klitschko called for emergency crews to be dispatched to several city neighbourhoods.

Ukraine's air force reported that Russian missiles were targeting Kyiv and several other regions.

A Ukrainian drone attack early this morning damaged three apartment buildings, an oil depot and coastline structures in the Russian Black Sea port of Novorossiysk, officials said.

The operational headquarters of Krasnodar region, writing on Telegram, said drone fragments hit three apartments, smashing windows but causing no injuries.

It said the attack also damaged an oil depot in a trans-shipment complex as well as coastal structures, without providing any further details.

Ukrainian president Volodymyr Zelensky met soldiers in a bunker on Thursday, spoke with military commanders and laid flowers for deceased soldiers on his trip.

He said he discussed decisions needed to strengthen Ukrainian defences, including staffing and equipment.

The visit comes as Zelensky and his government are trying to extinguish the fallout from a corruption scandal in the energy sector, which has maddened Ukrainians facing widespread blackouts due to Russia's bombing of power stations.

Ukraine has tried to increase the pain on Russia in recent months, using drones to target its oil infrastructure far behind the battle lines to try to create shortages and diminish Russian revenue streams.

The military said it hit an oil terminal in occupied Crimea, an oil depot in the occupied Zaporizhzhia region and other military targets overnight. It said it used weapons including the Flamingo, a new Ukrainian-made ground-launched cruise missile it says has a range of thousands of kilometres.

At the height of the strikes between August and October, attacks and planned maintenance took 20 per cent of Russia's refinery capacity offline, Reuters reported earlier, citing calculations based on information from three Russian industry sources.