A former nurse has pleaded not guilty to murdering five patients and injuring five others with bleach injections at a Texas dialysis clinic.

The Lufkin Daily News reports in Saturday's editions that 35-year-old Kimberly Saenz remains free on $500,000 bond after her Friday arraignment. She's charged with five counts each of capital murder and aggravated assault with a deadly weapon.

The indictment alleges she injected 10 patients with bleach last April at the Lufkin DaVita Dialysis clinic. Five died.

Federal records show 34 patients were taken by ambulance from the clinic that month, more than three times the March total.

DaVita fired Saenz a day after temporarily closing the clinic.

No trial date has been set.