Ukraine said on Sunday it is pausing the evacuation of civilians from the east of the country for one day, because of a failure to agree on terms with Russian forces.

"As of this morning, April 17, we have not been able to agree with the occupiers on a ceasefire on the evacuation routes. That is why, unfortunately, we are not opening humanitarian corridors today," Ukrainian Deputy Prime Minister Iryna Vereshchuk wrote in a statement on social media, referring to Moscow's forces.