Ukraine and Russia have reported inflicting heavy losses as the battle for Bakhmut rages on.
Moscow has been trying to take the eastern Ukrainian city for months in a grinding war of attrition.
Ukrainian President Volodymyr Zelensky said Russian forces had suffered more than 1,100 deaths in the past few days, with many more seriously injured.
Russia said it had killed more than 220 Ukrainian service members over the past 24 hours.
The BBC is unable to verify the numbers given by either side.
Analysts say Bakhmut has little strategic value, but has become a focal point for Russian commanders who have struggled to deliver any positive news to the Kremlin.
Capture of the city would bring Russia slightly closer to its goal of controlling the whole of Donetsk region, one of four regions in eastern and southern Ukraine annexed by Russia last September following referendums widely condemned outside Russia as a sham.
Ukrainian commanders, who have committed significant resources to defending the city, say their strategy aims to tie Russia’s forces down and prevent Moscow from launching any further offensives in the coming months.
“In less than a week, starting from 6 March, we managed to kill more than 1,100 enemy soldiers in the Bakhmut sector alone, Russia’s irreversible loss, right there, near Bakhmut,” Mr Zelensky said in his nightly video address.
He added that 1,500 Russian soldiers were wounded badly enough to keep them out of further action. (BBC)