An independent autopsy conducted on the Oklahoma prisoner whose execution lasted 43 minutes while he writhed and groaned appears to show the intravenous needles that were supposed to deliver lethal fluids were never correctly inserted.
Oklahoma governor Mary Fallin ordered an investigation into Clayton Lockett’s April 29 execution after the execution, during which Lockett was sometimes conscious and possibly attempting to speak. Corrections director Robert Patton said it appeared Lockett eventually died of a “massive heart attack” after failed resuscitation efforts.
A rare double execution was scheduled for that evening. The execution of the second prisoner, Charles Warner, was called off.
A forensic pathologist hired by Lockett's attorneys to independently examine the body, Dr Joseph Cohen, declined to comment except to confirm the documents were genuine. However, his report appears to show that phlebotomists failed to properly insert intravenous needles near Lockett’s groin. The IV was supposed to deliver a lethal cocktail of three chemicals.