Ukraine-Russia war latest: Heavy fighting around key eastern cities; Russia 'sustaining nearly 900 casualties per day'

We're pausing our live coverage for this evening, but we'll be back tomorrow with more updates and analysis.

An explosion has injured five people in the Russian city of Belgorod, its governor says.

Vyacheslav Gladkov said 30 homes and 10 cars were damaged, without specifying the source of the explosion.

The wounded were taken to hospital with shrapnel wounds including to the head and face, he said.

He said it was "miraculous" nobody had died in the incident.

Belgorod is located near the border with Ukraine, across from the northeastern Ukrainian city of Kharkiv. 

Photographs taken in Kharkiv, Ukraine, show firefighters tackling a blaze caused by a Russian missile strike.

Regional governor Oleh Syniehubov said a civilian building was set ablaze overnight, injuring  four people, including a 13-year-old child.

Russian state agency RIA claimed Moscow's forces struck a drone warehouse in Kharkiv that had been used by Ukrainian troops.

The Russian embassy to the UK has branded Lord Cameron's remarks as "confirmation of the UK's increasing direct involvement" in the war.

On a visit to Kyiv, the foreign secretary said Ukraine had a right to use British weapons to strike targets inside Russia, and that it was up to Ukraine whether to do so.

"Guided by its own purely political purposes, including opportunistic electoral considerations, the UK government is persistently pursuing a course of escalation and expansion of geography of military actions," read a statement by the Russian embassy.

It continued: "When the tasks of the special military operation are completed, all those involved in the strikes on peaceful Russian cities and other criminal acts will face the punishment they deserve."

Russian officials often refer to Moscow's invasion of Ukraine as a special military operation.

Kyiv has responded to earlier reports that Russia has put Volodymyr Zelenskyy on a wanted list.

The Ukrainian foreign ministry said it demonstrated the "desperation of the Russian state machine and propaganda, which are at a loss for what else to invent to garner attention".

A statement from the ministry continued: "We would like to remind everyone that, unlike the worthless Russian announcements, the International Criminal Court's warrant for the arrest of Russian dictator Vladimir Putin on war crimes charges is real and enforceable in 123 countries."

The Group of Seven nations is discussing a proposal to send up to $50bn (£39.9bn) in aid to Ukraine, reports say.

The US has proposed the money is repaid with the windfall profits from Russian assets frozen in Europe, according to Bloomberg.

America is pushing other G7 leaders - the heads of the UK, Canada, Germany, Italy, France and Japan - to agree on the plan when they meet in June.

But discussions have been difficult and an agreement could take months, Bloomberg reported, citing people familiar with the proposal.

The move comes after Washington approved a major assistance package worth $61bn last month, which had been delayed for months by Republicans in the House of Representatives.

It will likely take weeks until US military assistance arrives on the frontline at scale, according to an American thinktank.

The Institute for the Study of War said Russian forces will take advantage of the lag to try and make "operationally significant gains in key sectors", such as near Chasiv Yar and Avdiivka.

But should these gains be made, they will not signal the collapse the Ukraine's defences, said the ISW.

Earlier today, we reported how heavy fighting was taking place in villages near Avdiivka and Bakhmut, as well as Chasiv Yar, to Bakhmut's west.

A senior Ukrainian intelligence chief said it is "probably a matter of time" before Chasiv Yar falls. 

Ukraine received artillery shells, missiles and anti-armour rockets on 28 and 29 April in the first instalments of America's newly approved $61bn  tranche of aid, the New York Times reported.

Citing a senior Spanish official, the news outlet said a Patriot interceptor missiles arrived in Poland en route to Ukraine on Tuesday.

Russia has put Volodymyr Zelenskyy on a wanted list, Russian state media reports.

Moscow has opened a criminal case against the Ukrainian president, according to Tass news agency.

It cited the Russian interior ministry's database, but gave no further details.

Russia has issued arrest warrants for a number of Ukrainian and other European politicians since the start of the war.

Russian police put Estonian prime minister Kaja Kallas, Lithuania's culture minister and members of the previous Latvian parliament on a wanted list for destroying Soviet-era monuments. 

Russia also issued an arrest warrant for the International Criminal Court prosecutor who last year prepared a warrant for Vladimir Putin on war crimes charges.

Another attack has been reported in Kharkiv, following drone strikes overnight.

The region's governor said Russian troops shelled the area, leaving a 74-year-old woman injured and in need of hospitalisation. 

"As a result of five strikes, two two-story apartment buildings, one private house and networks were damaged," Oleg Synegubov said. 

A private house was also struck. 

Around $498,000 (£396,000) in funds meant for the reconstruction of a heavily damaged Kyiv suburb has "disappeared," Ukraine's State Audit Service has said. 

Borodianka, once a town of 12,000 people, suffered massive destruction in the early weeks of Russia's invasion.

Money has been directed at the suburb for its reconstruction since, but an audit of the town council found a large discrepancy related to plastic-metal windows, which were noted down for installation but never actually put in.

More losses were found when the auditors found that some materials had been purchased and installed at higher rates that the market price.