Editing Clayton Lockett (section)

== Failed execution[edit] ==
Oklahoma State Penitentiary, the location of the execution chamber of Oklahoma

Lockett's failed execution occurred at Oklahoma State Penitentiary in McAlester, Oklahoma, on April 29, 2014, after he had been tasered by staff and attempted to cut himself earlier that day. After administration of the first drug at 6:23 p.m. CDT, Lockett was declared unconscious at 6:33 p.m, and the execution was halted after about twenty minutes. He was declared dead at 7:06 p.m. due to a heart attack.

Oklahoma Department of Corrections Director Robert Patton said one of the doctors present stopped the execution after Lockett had a "vein failure". According to the Department of Corrections, the time for an inmate to be pronounced dead was 6 to 12 minutes in the previous 19 executions before Lockett's.

After being declared unconscious, Lockett was able to raise his head and said, "Oh, man", "I'm not..." and according to some sources, "something's wrong". Lockett began writhing at 6:36 p.m. and was observed twitching and convulsing. He attempted to rise from the table at 6:37 p.m. and loudly exhaled. A lawyer for Lockett reportedly said, “It looked like torture.” 

All three drugs had been administered to Lockett, but it was unclear how much entered his system. A vein in the groin was selected as the injection site, and a cloth was put over it to prevent witnesses seeing the groin area. This prevented staff from seeing that the IV connection had failed.Patton said "the chemicals did not enter into the offender". Prison officials had reportedly discussed taking Lockett to a hospital before he died.

A subsequent report showed Clayton Lockett's execution was halted 33 minutes after it began, his vein collapsed as the drugs were administered, and a doctor said there were not enough drugs left and that Lockett had not been given enough drugs to cause death; the doctor also said there were not enough drugs to continue. The report noted:

The doctor checked the IV and reported the blood vein had collapsed, and the drugs had either absorbed into tissue, leaked out or both. [...] Patton asked if enough drugs had been administered to cause death, to which the doctor replied “no”. The director then asked if another vein was available to complete the execution, and if so, were there enough drugs left. The doctor answered no to both questions.