The mayor of the besieged Ukrainian city of Mariupol says more than 5,000 civilians have been killed during the monthlong Russian blockade, among them 210 children.

Mayor Vadym Boichenko said Wednesday that Russian forces have among other targets bombed hospitals, including one where 50 people burned to death.

Boichenko said that more than 90% of the city’s infrastructure has been destroyed by Russian shelling.

The Russian military is besieging the strategic Sea of Azov port, and has cut food, water and energy supplies and pummeled it with artillery and air raids. Capturing the city would allow Russia to secure a land corridor to the Crimean Peninsula that Russia annexed from Ukraine in 2014.

Meanwhile, Ukrainian authorities are urging residents of eastern regions to evacuate in the face of an impending Russian offensive.

Deputy Prime Minister Iryna Vereshchuk on Wednesday called on people in the Donetsk and Luhansk regions to leave now “when there is still such a possibility.”

Donetsk region Gov. Pavlo Kyrylenko said that at least five civilians were killed and another eight wounded by Russian shelling Wednesday. He also urged civilians to leave for safer regions.

Over 10 million people, about a quarter of Ukraine’s population, have been displaced by the war, and more than 4 million of them have fled the country.

(The Associated Press)