Convicted murderer Christa Pike survived two doses of pentobarbital during Tennessee's attempt to execute her, leaving medical experts examining how a lethal injection designed to stop breathing and the heart failed to kill her.
The 50-year-old death row inmate was taken to the hospital after the execution was halted on Wednesday night and was in critical condition, receiving life-saving care on Thursday, according to her lawyers. The Tennessee Department of Correction said it followed its established execution protocol, but officials have yet to determine exactly what went wrong.
