Joe Arridy
Joe Arridy, a man with a severe intellectual disability reported to have an IQ of 46, was executed in the gas chamber at the Colorado Territorial Correctional Facility in 1939. Press accounts say he was coerced into a confession to a 1936 murder that he did not commit, and that the prison's warden pleaded for his life. Colorado's governor granted him a pardon in 2011.
Cause of death, as reported: Executed by the state. Objectors say he had a severe intellectual disability, that his confession was coerced, that he did not commit the 1936 murder, and that the warden pleaded for him; the governor later granted a posthumous pardon in 2011.
Reported by: Colorado Territorial Correctional Facility (the agency that held him). The only account of how this person died comes from the agency that held him.