The Ukrainian government says about 100 civilians have been able to evacuate the besieged Azovstal steel plant in Mariupol after the United Nations helped establish what it described as a “safe passage operation.” One evacuee said she had been staying inside a basement in the steel plant for two months after her home was destroyed.

Natalya Tsyntomirska: “We lived in the basement starting from the 27th of February. We didn’t leave the basement because our house is in close proximity to Azovstal. The whole time we were shelled with mines, and then airstrikes started. Our house is completely destroyed. We have a two-story building. It’s not there anymore. It burned to the ground.”

Hundreds of more civilians and many fighters remain trapped at the steel plant in Mariupol, but Russia has reportedly resumed shelling the plant. This comes as the United Nations says the number of Ukrainians who have fled the country has now topped 5.5 million.

In other developments, a Russian rocket attack has destroyed an airfield in southern Ukraine. Meanwhile, a large fire broke out at a Russian military facility Sunday in the southern Belgorod region, which borders Ukraine. It is the latest incident suggesting Ukraine is carrying out attacks inside Russia.