The death toll from the missile strike on the train station in Ukraine’s Kramatorsk has risen to 57 people, according to a local politician.
Donetsk region governor Pavlo Kyrylenko said said 109 people were wounded in the attack which Ukraine has blamed on Russia.
Moscow has denied responsibility, saying the missile was Ukrainian.
Earlier in the day, Ukraine’s prosecutor general said was a “war crime”.
Iryna Veneditktova told Sky News: ““It was a Russian missile which killed more 50 people.
“These people just wanted to save their lives. “They wanted to be evacuated with kids.
“It was women, it was children, and they just wanted to save their lives.”
The deadly attack has also made it “even more difficult” for people trying to flee the fighting, according to the head of the International Committee of the Red Cross in Ukraine who said refugees were more likely to use cars to escape rather than the railways.
Pascal Hundt also told Sky News his staff had been unable to reach the besieged city of Mariupol despite trying for five days.
He said: “The security conditions were not good, the security guarantees we got were were not good either, so at around 20 kilometres from Mariupol we had to go back.”
He said they collected refugees on the way and private cars joined the convoy under the Red Cross flag, with more than 1,000 people finally reaching safety.
“Many more of such operations will need to take place in the coming days, in the coming weeks.
“It’s urgent and we really are in contact with the Russian authorities with the Ukrainian authorities to ensure that safe passage is being provided to these people so that they can move freely and safely to a much safer place”.