Russian missile and drone attacks on Ukraine overnight into Saturday have killed at least four people and wounded 20, according to officials.

In the capital, Kyiv, two people were killed and 13 were wounded in a ballistic missile attack in the early hours of Saturday, Kyiv's police said.

A fire broke out in a non-residential building in one location, while debris from intercepted missiles fell in an open area at another site, damaging windows in nearby buildings, Ukraine’s State Emergency Service wrote on the message app Telegram. 

In the Dnipropetrovsk region, two people were killed and seven wounded, acting regional Gov. Vladyslav Haivanenko said.

Ukraine's air force said Russia launched nine missiles and 62 drones, of which four missiles and 50 drones were intercepted.

In Russia, the Defense Ministry said its air defenses shot down 121 Ukrainian drones over Russia overnight.

Ukrainian President Volodymyr Zelenskyy said on Saturday that such attacks intensify Ukraine's need for Patriot defense systems.

Zelenskyy is hoping Ukraine can purchase 25 Patriots from the US to fortify its air defenses, particularly in cities. 

He also urged the United States on Friday to expand its sanctions on Russian oil from two companies to the whole sector, and appealed for long-range missiles to hit back at Russia.

Zelenskyy was in London for talks with two dozen European leaders who have pledged military help to shield his country from future Russian aggression if a ceasefire stops the more than three-year war.

The meeting hosted by British Prime Minister Keir Starmer aimed to step up pressure on Russian President Vladimir Putin, adding momentum to recent measures that have included a new round of sanctions from the United States and European countries on Russia’s vital oil and gas export earnings.

Russian Foreign Minister Sergey Lavrov made clear in public comments on Tuesday that Russia is opposed to an immediate ceasefire.

A White House official confirmed on Friday that Kirill Dmitriev, Putin’s envoy for investment and economic cooperation, who announced his visit on X, will meet with US envoy Steve Witkoff.

The official spoke on condition of anonymity because the person was not authorized to publicly discuss the private meeting.