"The Oklahoman reported Thursday that corrections officials used potassium acetate — not potassium chloride, as required under the state's protocol — to execute

"The Oklahoman reported Thursday that corrections officials used potassium acetate — not potassium chloride, as required under the state's protocol — to execute Charles Frederick Warner. Last week, Gov. Mary Fallin issued a last-minute stay for inmate Richard Glossip after officials discovered that potassium acetate had been delivered on the day of his scheduled execution."