Ivan Cantu was executed on Wednesday following over 20 years on death row.
He was eventually caught in 2004
Following an autopsy, experts concluded a death row inmate suffered an 'excruciating' execution
David Neal Cox was executed in 2017
He described it as being something like from a horror movie
The controversial new technique was used for the first time on 25 January.
The final words of Kenneth Smith before he was executed are rather disturbing.
Kenneth Smith became the first human to undergo the controversial new execution method in Alabama
Kenneth Eugene Smith was executed in Alabama on January 25 after first being sentenced to death in 1988.
Kenneth Eugene Smith has been put to death using the method which many experts warned about
Kenneth Smith is set to die in Alabama after decades on death row
Kenneth Smith will be the first person to test out a new execution method next week
Death row inmate Robert Alton Harris uttered some chilling final words.
He was given two options on how he was to be killed