(NBC News) Oklahoma death row inmate Richard Glossip received a last minute stay of execution Thursday.
The stay was granted after Oklahoma’s Department of Corrections did not receive one of the drugs needed to carry out the procedure.
Prison officials received potassium acetate as part of a three drug cocktail for a lethal injection, but the state’s guidelines call for the use of potassium chloride, which stops the heart.
State officials say they need more time to determine if the new drug is a suitable substitute.
“This will allow us time to review the current drug protocol and answer any questions we may have about the drug protocol,” said Department of Corrections Director Robert Patton.
Oklahoma’s execution protocols were called into question last year when a man sentenced to death regained consciousness and appeared to be in agony in the middle of the procedure.
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