The unidentified fighter called the situation “just awful” and said that up to 600 fighters are wounded within the plant. Azovstal is the last holdout against Russian forces in the southern port city, and hundreds of Ukrainian fighters are trapped within its massive structure.

“Fighters are simply lying without limbs, without arms, without legs,” the fighter said in a broadcast on Ukrainian television, CNN reported Saturday. “They are dying in large numbers because we can’t provide medical care. There are simply no medicines. Those with severe wounds…it is almost impossible to save them.”

He added that the plant’s hospital ward is “completely unsanitary,” with swarming flies and “disgusting” odors. The fighter said he even witnessed a medic perform a surgery on a soldier with a bad leg wound without any anesthesia.