Update at 8:19 p.m. ET. Execution Fails:
According to reporters tweeting from inside the Oklahoma State Penitentiary in McAlester, Oklahoma, the execution of Clayton D. Lockett has failed. Lockett died of a heart attack after the execution was aborted.
The execution of Charles Warner, which was supposed to take place at 9 p.m. ET., was stayed by Corrections Director Robert Patton.
According to the AP reporter on the scene, about 34 minutes after the execution was scheduled to begin, Lockett was still conscious.