Russia shelled more than 80 people including Turkish citizens seeking refuge at a mosque in Mariupol.
Ukraine accused Russia of refusing to allow people out of Mariupol, where a blockade has left hundreds of thousands trapped.
“The mosque of Sultan Suleiman the Magnificent and his wife Roxolana (Hurrem Sultan) in Mariupol was shelled by Russian invaders,” Ukraine’s foreign ministry said. “More than 80 adults and children are hiding there from the shelling, including citizens of Turkey.”
The ministry however did not say how many people were killed or wounded in the attack.
Russia blamed Ukraine for taking advantage of the humanitarian corridors consented to by both states to evacuate people.
The situation in Mariupol, which has been under siege by Russian forces in the past two weeks has now deteriorated and the civilians are now going days without food and water.
Ukrainian foreign minister Dmytro Kuleba tweeted on Friday: “Besieged Mariupol is now the worst humanitarian catastrophe on the planet. 1,582 dead civilians in 12 days.”
Authorities are considering fresh plans to open new humanitarian corridors around Kyiv to enable civilians get out of the city.
“I very much hope that the day will go well, that the planned routes will be open and that Russia will meet its obligations regarding the observance of the ceasefire,” Vereshchuk said in a video uploaded to the website of the Ukrainian presidency.