Russians continue to attack an iron and steel plant. Petro Andriushchenko, an adviser to Mariupol’s mayor and other Ukrainian officials said Russian forces were bombarding the Azovstal plant, one of the city’s last bastions still under Ukrainian control, writes CNN.

The Russian military claims they have blockaded Ukrainian forces there.

The Azovstal iron and steel works is a sprawling industrial complex in the southeastern corner of Mariupol. The compound spans an area of more than four square miles and used to employ more than 10,000 people. It is unclear how many Ukrainian troops are still holding out in the plant.