Fears grow for Ukrainian civilians

Fears grow for Ukrainian civilians after the checkpoint is shelled and evacuations fail for a second day

Kyiv, Ukraine (CNN)Concern was mounting Sunday for the plight of civilians trapped in the besieged southeastern Ukrainian cities of Mariupol and Volnovakha, as well as in the capital, Kyiv after three people were reported killed Sunday in a blast at an evacuation crossing point.

Two mortar or artillery shells hit the checkpoint in the suburb of Irpin, northwest of Kyiv, Ukrainian authorities said, and two children were among those killed. Social media videos showed extensive destruction.

International media filming at the checkpoint reported that a shell landed as a stream of civilians was coming through.

In the country's southeast, hopes that a second attempt to open up safe evacuation routes for civilians in Mariupol and Volnovakha might succeed, after a first effort failed on Saturday, were dashed within hours.

The governor of the Donetsk region, Pavlo Kyrylenko, said on Facebook on Sunday that the planned "evacuation convoy with local residents was never able to leave Mariupol today: the Russians began to regroup their forces and heavy shelling of the city. It is extremely dangerous to evacuate people in such conditions."

Kyrylenko added that a convoy carrying humanitarian aid from the central city of Zaporizhzhya, three hours from Mariupol, "has not yet reached its destination and is currently on its way."

The International Committee of the Red Cross (ICRC) also said Sunday's planned evacuation in Mariupol had failed.

"Today, our team began opening up the evacuation route from Mariupol before hostilities resumed. We remain in Mariupol and are ready to help facilitate further attempts -- if the parties reach an agreement, which is for them alone to implement and respect," the ICRC said on Twitter.

"People in Mariupol and in other places across #Ukraine are living in desperate situations. They must be protected at all times. They are not a target. People urgently need water, food, shelter. The basics of life. We need safety guarantees to be able to bring them aid."

Ukrainian lawmaker Inna Sovsun claimed Sunday that Russian forces had damaged a gas pipeline in southeastern Ukraine, leaving hundreds of thousands of people without heating in bitter temperatures.

"Donetsk-Mariupol gas pipeline was damaged by #Russian occupants. Now, more than 750,000 of people are left without any heat, while it's still often below 0°C (32 degrees Fahrenheit) outside," Sovsun said on Twitter.