Oklahoma Used Wrong Drug During Execution January mistake just came to light By Newser Editors and Wire Services Posted Oct 8, 2015 10:07 AM CDT 126 comments Comments This photo provided by the Oklahoma Department of Corrections shows Charles Warner, who was executed on Jan. 15, 2015. (Uncredited) (Newser) – Oklahoma used the wrong drug to stop an inmate's heart during an execution in January, according to an autopsy report obtained by the Oklahoman. Corrections officials used potassium acetate—not potassium chloride, as required under the state's protocol—to execute Charles Warner, according to the newspaper. Last week, Gov. Mary Fallin issued a last-minute stay for another inmate, Richard Glossip, after officials discovered that potassium acetate had been delivered on the day of his scheduled execution. As a result, all executions in Oklahoma are on hold at the request of Attorney General Scott Pruitt as the state investigates the mix-up. Potassium chloride, which stops the heart, is the final drug in the state's protocol following a sedative and paralytic. Items used in Warner's execution were sent to the Office of the Chief Medical Examiner, which performed an autopsy. The report said the office received two syringes labeled "potassium chloride" but that the 12 vials used to fill the syringes were labeled "single dose Potassium Acetate Injection." After receiving the first drug in the series, midazolam, Warner said, "My body is on fire," but showed no other signs of distress and was pronounced dead after 18 minutes. Fallin told the newspaper that "it became apparent" during the discussions Sept. 30 about a delay in Glossip's execution that the Corrections Department may have used potassium acetate in Warner's execution. "I was not aware, nor was anyone in my office aware, of that possibility until the day of Richard Glossip's scheduled execution," she said. The governor supports an inquiry into Warner's execution as well.