Tennessee officials failed to execute death row inmate Christa Pike on Wednesday evening after administering two doses of the lethal drug pentobarbital. Pike, 50, survived the procedure and was transported by ambulance to an off-site medical facility where she received life-saving measures, according to her attorneys.

Pike had been scheduled for execution at Riverbend Maximum Security Institute for the 1995 murder of her classmate Colleen Slemmer. She was 18 at the time of the crime and would have become the first woman executed in Tennessee in more than 200 years.

The execution proceeded after a day of legal challenges. An appeals court issued a last-minute stay that was overturned by the U.S. Supreme Court hours before the procedure. Witnesses reported that Pike remained conscious and was heard snoring loudly after both injections. The curtain to the witness room was lowered multiple times during the attempt.

Pike's attorneys filed emergency motions during the process, stating she retained a heartbeat and was experiencing unnecessary suffering. Tennessee Department of Correction officials confirmed they followed the state's protocol, which calls for a second set of syringes if the first dose does not result in death, but noted the protocol does not specify further actions beyond that point.

In a statement, Gov. Bill Lee ordered a comprehensive third-party review of the incident and suspended the state's remaining scheduled execution for the rest of the year. Pike's current medical condition remains unclear as of Thursday morning.

Pike was convicted in 1996 for the brutal killing committed while she was part of a group that attacked Slemmer. She has spent nearly three decades on death row.