A botched execution that used a new drug combination left an Oklahoma inmate writhing and clenching his teeth on the gurney Tuesday, leading prison officials to halt the proceedings before the inmate's eventual death from a heart attack.
Clayton Lockett, 38, was declared unconscious 10 minutes after the first of the state's new three-drug lethal injection combination was administered. Three minutes later, though, he began breathing heavily, writhing, clenching his teeth and straining to lift his head off the pillow.
The blinds were eventually lowered to prevent those in the viewing gallery from watching what was happening in the death chamber, and the state's top prison official eventually called a halt to the proceedings. Lockett died of a heart attack a short time later, the Department of Corrections said.
"It was a horrible thing to witness. This was totally botched," said Lockett's attorney, David Autry.