Over 30,000 mercenaries fighting for the Russian paramilitary Wagner Group have been killed or injured since the Ukraine war began, US officials say. บาคาร่าsa

White House spokesman John Kirby said the group had suffered significant losses in recent weeks, with about 9,000 fighters killed in action.

Wagner has recruited heavily in Russian prisons, and Mr Kirby said most casualties were untrained convicts.

Despite the casualties, Wagner has made gains around the city of Bakhmut.

Some of the fiercest fighting of the war has taken place around the eastern city, with Wagner mercenaries heavily involved in Russian efforts to capture it.

Ukrainian troops say Wagner fighters had been sent into attacks in large numbers over open ground, and a Ukrainian army spokesperson said Moscow had failed to evacuate wounded and dead soldiers - leading to "places where their bodies are just piled up".