However, within a week the state is behind schedule and in a scramble, having only one execution completed, three more scheduled and four that are on hold as inmates exhaust their final appeals. Anesthesiologist David Lubarsky, one of the original authors of the 2005 Lancet study, warns that the drug is "a very poor choice" for lethal injection, since even its maximum effect falls short of rendering a person completely unconscious.
Jones was administered the lethal injection at 7:06 p.m. Monday (8:06 p.m. ET) and pronounced dead 14 minutes later.
Jones, 52, was reportedly the first to be executed on Monday and was pronounced dead at 7.20pm.
In the emergency filing, Williams' lawyers wrote that officials spent 45 minutes trying to place an IV line in Jones' neck before placing it elsewhere.
Officials said Williams was in the death chamber and on the gurney when word of the stay arrived. The last double execution carried out in the United States was in 2000 in Texas. He raped, strangled, and killed her, and beat her 11-year-old daughter, Lacey, during his robbery of her accounting office.
"I thought that she was dead".
Before his execution, Jones delivered a two-minute final statement where he apologised to Phillips' family, ending with: I'm sorry. "It's a good thing that it's done, for her", Whitaker told CNN affiliate KARK.
Later, Phillips' daughter Lacey, who survived the attack, thanked the prosecutors.
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"I'm glad that chapter is closed", she said Monday night.
The state attorney general, Leslie Rutledge, says the inmates' appeals are merely delaying tactics. His sentence was carried out just three hours later.
For now, we are forced to go through an agonizing process that recalls to victims' families their worst experiences and bares the questions that shape our individual and collective thinking about the rightness or wrongness of capital punishment.
After a brief legal back-and-forth, two convicted Arkansas killers have been put to death. "I'm glad that part of my life, that chapter, is closed". Jones was given the death penalty for the 1995 rape and killing of Mary Phillips.
Williams was sentenced to death in 1997 for abducting, robbing, raping and killing Stacy Errickson, who was 22 and was living at the Little Rock Air Force Base while her husband was serving overseas. Marcel Williams, 24 at the time, forced her into his vehicle at gunpoint, drove her to several ATMs to make a total of 18 transactions, then raped her, strangled her in an abandoned storage shed, and buried her body in a shallow grave in North Little Rock. Her body was found about two weeks later. The inmates all challenged the use of the drug in court, but the Supreme Court denied their motion. It says Martel and psychologist Mark Cunningham, who evaluated Williams at trial, and neuropsychologist Ricardo Weinstein, who began an evaluation of Williams after the trial, have all concluded that he is intellectually disabled and that he met the definition of the phrase at the time of his crime. There was no visible signs of struggle, such "grimacing" or "clenching of the fingers", KARK reporter Jessi Turnure said. "That's what I had been told and then when I took the picture, with the flash, I saw her look up with that one eye".
Arkansas has scheduled another execution for April 27.
The inmates sued over the sedative used in the two-drug protocol. "The U.S. Supreme Court denied those claims without comment".
The first execution was carried out Thursday. Four days prior convicted murderer, Ledell Lee, was executed.