"They should have anticipated possible problems with an untried execution protocol," Autry said. "Obviously the whole thing was gummed up and botched from beginning to end. Halting the execution obviously did Lockett no good."
Republican Gov. Mary Fallin ordered a 14-day stay of execution for an inmate who was scheduled to die two hours after Lockett, Charles Warner. She also ordered the state's Department of Corrections to conduct a "full review of Oklahoma's execution procedures to determine what happened and why during this evening's execution."
Robert Patton, the department's director, halted Lockett's execution about 20 minutes after the first drug was administered. He later said there had been vein failure.
The execution began at 6:23 p.m., when officials began administering the midazolam. A doctor declared Lockett to be unconscious at 6:33 p.m.
Once an inmate is declared unconscious, the state's execution protocol calls for the second drug, a paralytic, to be administered. The third drug in the protocol is potassium chloride, which stops the heart. Patton said the second and third drugs were being administered when a problem was noticed. He said it's unclear how much of the drugs made it into the inmate's system.
Lockett began writhing at 6:36. At 6:39, a doctor lifted the sheet that was covering the inmate to examine the injection site.
"There was some concern at that time that the drugs were not having that (desired) effect, and the doctor observed the line at that time and determined the line had blown," Patton said at a news conference afterward, referring to Lockett's vein rupturing.
After an official lowered the blinds, Patton made a series of phone calls before calling a halt to the execution.
"After conferring with the warden, and unknown how much drugs went into him, it was my decision at that time to stop the execution," Patton told reporters.