A humanitarian corridor had been agreed on with Russia for the evacuation of women, children and the elderly from the besieged city of Mariupol, Ukrainian Deputy Prime Minister Iryna Vereshchuk said.
"Given the catastrophic humanitarian situation in Mariupol, it is in this direction that we will focus our efforts today," she said on Telegram.
"We managed to agree in advance on a humanitarian corridor for women, children and the elderly. Gathering in Mariupol today, April 20, from 14:00 [2:00 p.m. local] on the corner of Taganrog Street and 130th Taganrog Division."
The convoy would move from Mariupol toward Manhush and then onward through the Russian-held city of Berdyansk, then north toward the Ukrainian-held city of Zaporizhzhia, Vereshchuk said.
"Due to the very difficult security situation, changes may occur during the corridor," she said. "So, please follow the relevant official announcements. We will do our best to make everything work properly."
Tens of thousands of civilians remain in the city, which has been encircled by Russian forces for weeks and under relentless bombardment.