Ukraine is attempting to rescue civilians from Mariupol, as Russian forces continue their shelling of the besieged city.
A humanitarian corridor was opened on Wednesday out of the city, but Russian strikes - including on a maternity ward - hindered the evacuation.
Ukrainian officials made fresh attempts on Thursday to get civilians out of Mariupol but Kyiv said Russia is continuing to block their exit.
Kyiv's mayor, meanwhile, said half the population of the capital had fled following two-weeks of brutal Russian bombardments.
Russia's bombing of a maternity hospital in the Ukrainian city of Mariupol has been condemned as a "war crime", which left three people dead, including one child, and 17 injured.
The strike took place during a ceasefire covering the city, as Ukrainian officials attempted to evacuate civilians from the city.
The UN had earlier described conditions in the Mariupol as "apocalyptic" with constant shelling of the besieged city.