The Ukrainian government and Mariupol city authorities rejected terms set out by Russia demanding the surrender of the besieged southern city to Russian forces.
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"There can be no discussion of any surrender or of laying down arms," Ukraine's Deputy Prime Minister Irina Vereshchuk said.
Mariupol art school bombing
Also in Mariupol, an adviser to the city’s mayor said officials are struggling to find out how many people survived after an art school being used as a shelter was bombed by Russian forces on Sunday morning. An earlier estimate from the city council put the number sheltering in the school at 400. Vereshchuk said 7,295 people fled from the city through evacuation corridors on Sunday.