Four death row prisoners have tested positive for the coronavirus and another five are showing symptoms at the Arizona state prison.
One of the ill inmates has told the Associated Press he and the others are being isolated in a dirty, cockroach-infested building.
Arizona's first case on death row surfaced last week. A federal public defender says three other condemned prisoners have since tested positive.
They are housed at the prison in Florence, which accounts for 22 of the 34 cases in state prisons. It holds the 114 men who are sentenced to die in Arizona. Corrections officials have declined to comment.