An aide to Mariupol's mayor has said via Telegram that at least 100 civilians remain inside the Azovstal steelworks, in addition to military personnel, Reuters reported on Tuesday.  

Kyiv said Tuesday that more than 1,000 Ukrainian troops, many of them injured, remained in the sprawling Azovstal steel works in the Russian-controlled port city of Mariupol.

"More than a thousand" Ukrainian soldiers remain in the plant, Ukrainian Deputy Prime Minister Iryna Vereshchuk, told AFP.

"Hundreds are injured. There are people with serious injuries who require urgent evacuation. The situation is deteriorating every day."