The New York Times reports:
What was supposed to be the first of two executions here Tuesday night was halted when the prisoner, Clayton D. Lockett, began to twitch and gasp after he had already been declared unconscious and called out “man” and “something’s wrong,” according to witnesses. The administering doctor intervened and discovered that “the line had blown,” said the director of corrections, Robert Patton, meaning that drugs were no longer flowing into his vein. At 7:06 p.m., Mr. Patton said, Mr. Lockett died of a heart attack. Mr. Patton said he had requested a stay of 14 days in the second execution scheduled for Tuesday night, of Charles F. Warner. It was a chaotic and disastrous step in Oklahoma’s long effort to execute the two men, overcoming their objections that the state would not disclose the source of the drugs being used in a newly tried combination. It did not appear that any of the drugs themselves failed, but rather the method of administration, but it resulted in what witnesses called an agonizing scene.
Lockett was convicted in the 1999 shooting of a 19 year-old girl, who was then buried alive by his accomplices. Gov. Mary Fallin has postponed the second execution pending an investigation.