8:46
Russians allegedly exhuming bodies in Mariupol - city council
City officials in Mariupol say Russian occupiers have begun exhuming bodies buried in the yards of residential blocks.
Mariupol City Council said on Telegram that the occupiers are not allowing residents to bury people allegedly killed by the occupiers.
Each yard now has a supervisor to enforce this rule.
There are 13 mobile crematoria in Mariupol, according to Ukraine, and the city authorities suspect the Russians are trying to cover up war crimes.
The BBC is unable to verify the claims, but what we do know is that seven weeks of relentless Russian shelling, hunger and freezing temperatures have left thousands of Mariupol residents dead.
9:16
Russia vows more strikes on Kyiv after 'missile attack'
The Russian defence ministry says it has carried out missile strikes targeting Ukraine's capital, Kyiv, warning that attacks like this will intensify in retaliation for what it called Ukrainian "terror attacks" or "acts of sabotage" in Russia.
Russia says its sea-based cruise missiles struck a factory in the city overnight, which produces air-defence systems and anti-ship missiles.
As a result, the plant's "workshops for the production and repair of long-range and medium-range anti-aircraft missile systems, as well as anti-ship missiles, were destroyed", the ministry added in a statement published on its Telegram channel.
On Thursday, Russia accused Ukraine of sending helicopters across the border to attack several Russian towns.
The BBC is unable to verify these claims from Moscow.
9:48
Humanitarian corridors difficult to implement on the ground - ICRC
Nine humanitarian corridors to evacuate civilians have been agreed on in east and south Ukraine today, according to Ukraine's deputy prime minister.
But while humanitarian corridors are often agreed on in principle, it is far more difficult to implement them in practise, according to a spokesperson for the International Committee of the Red Cross, which is helping to assist the implementation of these corridors.
Speaking on Radio 4's Today Programme, Lucile Marbeau said that implementing the corridors on the ground is challenging: the "frontline is always volatile, truces are fragile, and you also need the whole chain of command of course to be aware of this truce, what is the precise route, what is the time frame, and this is what makes it so hard actually to implement".
However, she said that they had been successful in some regions, with 2,500 people evacuated from the Donetsk and Luhansk regions in eastern Ukraine yesterday.
In other areas like Mariupol, however, she said evacuating corridors had proven harder to implement, with people resorting to walking out of the besieged city, "exposing themselves to huge danger".
She added that humanitarian corridors are also vital for bringing in humanitarian aid to civilians who aren't able to leave.
10:09
Ukraine's battle for control of its skies
Jonathan Beale
BBC defence correspondent in the Donbas
The BBC was given an exclusive interview with a Ukrainian air defence officer about the battle for control of Ukraine's skies.
Russia may have received a bloody nose in its aborted attempts to take Kyiv, but with the Eastern region of the Donbas now firmly in Moscow's sights, the men and women of Dnipro's Anti-Aircraft Missile Brigade will continue to play a key role in the next phase of the war.
Defending Ukraine's skies from Russian attacks is already proving a challenge. As one Ukrainian air defence officer told the BBC, it is like trying to use a giant fly swatter which had large holes in it.
"We can't cover the whole airspace," Capt Kravchuk says simply.
The fact he is even sitting here speaking to us is somewhat remarkable - especially given the fact that "many air defence facilities were destroyed fully or partially" in the first days of the war.
It's a rare public admission by Ukrainian forces that they suffered significant losses in the early stages of the war.
10:34
Explosions heard in Kyiv overnight
We have more on the Russian missile strikes on Kyiv we reported earlier.
The strikes were carried out using sea-launched Kalibr cruise missiles and targeted the Vizar machine-building plant in the Kyiv suburb of Zhulyany, the Russian defence ministry said in a statement published on its Telegram channel.
Overnight, Kyiv residents say they did hear explosions, and social media users wrote that electricity had gone out in some places, BBC Ukrainian reports.
10:52
Russia's probably getting very frustrated, says analyst
As we've been reporting, the Russian army is on the brink of taking the southern Ukrainian city of Mariupol - strategically important to Russia's attempts to build a southern corridor from Russia to Crimea.
Justin Crump, chief executive of intelligence consultancy Sibylline, and a British Army veteran, tells BBC Radio 4's Today programme the situation in the city is a "ghastly humanitarian tragedy" with "appalling scenes of destruction", the likes of which have not really been seen since World War Two.
There's going to be fighting for a period of time, he says, especially focused on the Azovstal steel works - to the east of the city centre.
He explains: "There's a lot of Soviet-era bunkers there, it's industrial terrain, it's been prepared for defence for a long time by Ukrainian forces, including the Azov battalion who are very focused on the defence. And they're a very important target for the Russians because they are part of the right wing in Ukraine.
"It's going to be very hard to root out people who aren't going to surrender, over a long period of time."
Crump says around half of Russia's total force originally deployed to Ukraine is now in the south-east, with much of the rest preparing to move there, and with separatists joining them.
"We do understand they're under pressure from Putin to deliver results by the first week of May, and the victory parade in Russia. And that's included an order, we understand, to destroy things that can't be taken by then. And that may extend as far as the capital city... which saw raids last night.
"So that's all linked and Russia's probably getting very frustrated about the slow tempo of operations and success."
Russians allegedly exhuming bodies in Mariupol - city council
City officials in Mariupol say Russian occupiers have begun exhuming bodies buried in the yards of residential blocks.
Mariupol City Council said on Telegram that the occupiers are not allowing residents to bury people allegedly killed by the occupiers.
Each yard now has a supervisor to enforce this rule.
There are 13 mobile crematoria in Mariupol, according to Ukraine, and the city authorities suspect the Russians are trying to cover up war crimes.
The BBC is unable to verify the claims, but what we do know is that seven weeks of relentless Russian shelling, hunger and freezing temperatures have left thousands of Mariupol residents dead.
9:16
Russia vows more strikes on Kyiv after 'missile attack'
The Russian defence ministry says it has carried out missile strikes targeting Ukraine's capital, Kyiv, warning that attacks like this will intensify in retaliation for what it called Ukrainian "terror attacks" or "acts of sabotage" in Russia.
Russia says its sea-based cruise missiles struck a factory in the city overnight, which produces air-defence systems and anti-ship missiles.
As a result, the plant's "workshops for the production and repair of long-range and medium-range anti-aircraft missile systems, as well as anti-ship missiles, were destroyed", the ministry added in a statement published on its Telegram channel.
On Thursday, Russia accused Ukraine of sending helicopters across the border to attack several Russian towns.
The BBC is unable to verify these claims from Moscow.
9:48
Humanitarian corridors difficult to implement on the ground - ICRC
Nine humanitarian corridors to evacuate civilians have been agreed on in east and south Ukraine today, according to Ukraine's deputy prime minister.
But while humanitarian corridors are often agreed on in principle, it is far more difficult to implement them in practise, according to a spokesperson for the International Committee of the Red Cross, which is helping to assist the implementation of these corridors.
Speaking on Radio 4's Today Programme, Lucile Marbeau said that implementing the corridors on the ground is challenging: the "frontline is always volatile, truces are fragile, and you also need the whole chain of command of course to be aware of this truce, what is the precise route, what is the time frame, and this is what makes it so hard actually to implement".
However, she said that they had been successful in some regions, with 2,500 people evacuated from the Donetsk and Luhansk regions in eastern Ukraine yesterday.
In other areas like Mariupol, however, she said evacuating corridors had proven harder to implement, with people resorting to walking out of the besieged city, "exposing themselves to huge danger".
She added that humanitarian corridors are also vital for bringing in humanitarian aid to civilians who aren't able to leave.
10:09
Ukraine's battle for control of its skies
Jonathan Beale
BBC defence correspondent in the Donbas
The BBC was given an exclusive interview with a Ukrainian air defence officer about the battle for control of Ukraine's skies.
Russia may have received a bloody nose in its aborted attempts to take Kyiv, but with the Eastern region of the Donbas now firmly in Moscow's sights, the men and women of Dnipro's Anti-Aircraft Missile Brigade will continue to play a key role in the next phase of the war.
Defending Ukraine's skies from Russian attacks is already proving a challenge. As one Ukrainian air defence officer told the BBC, it is like trying to use a giant fly swatter which had large holes in it.
"We can't cover the whole airspace," Capt Kravchuk says simply.
The fact he is even sitting here speaking to us is somewhat remarkable - especially given the fact that "many air defence facilities were destroyed fully or partially" in the first days of the war.
It's a rare public admission by Ukrainian forces that they suffered significant losses in the early stages of the war.
10:34
Explosions heard in Kyiv overnight
We have more on the Russian missile strikes on Kyiv we reported earlier.
The strikes were carried out using sea-launched Kalibr cruise missiles and targeted the Vizar machine-building plant in the Kyiv suburb of Zhulyany, the Russian defence ministry said in a statement published on its Telegram channel.
Overnight, Kyiv residents say they did hear explosions, and social media users wrote that electricity had gone out in some places, BBC Ukrainian reports.
10:52
Russia's probably getting very frustrated, says analyst
As we've been reporting, the Russian army is on the brink of taking the southern Ukrainian city of Mariupol - strategically important to Russia's attempts to build a southern corridor from Russia to Crimea.
Justin Crump, chief executive of intelligence consultancy Sibylline, and a British Army veteran, tells BBC Radio 4's Today programme the situation in the city is a "ghastly humanitarian tragedy" with "appalling scenes of destruction", the likes of which have not really been seen since World War Two.
There's going to be fighting for a period of time, he says, especially focused on the Azovstal steel works - to the east of the city centre.
He explains: "There's a lot of Soviet-era bunkers there, it's industrial terrain, it's been prepared for defence for a long time by Ukrainian forces, including the Azov battalion who are very focused on the defence. And they're a very important target for the Russians because they are part of the right wing in Ukraine.
"It's going to be very hard to root out people who aren't going to surrender, over a long period of time."
Crump says around half of Russia's total force originally deployed to Ukraine is now in the south-east, with much of the rest preparing to move there, and with separatists joining them.
"We do understand they're under pressure from Putin to deliver results by the first week of May, and the victory parade in Russia. And that's included an order, we understand, to destroy things that can't be taken by then. And that may extend as far as the capital city... which saw raids last night.
"So that's all linked and Russia's probably getting very frustrated about the slow tempo of operations and success."