Christopher Sepulvado, 81, died Saturday at the Louisiana State Penitentiary in Angola, Louisiana, "from natural causes as a result of complications arising from his pre-existing medical conditions," according to the Louisiana Department of Public Safety and Corrections.

Sepulvado was Louisiana's oldest prisoner on death row at 81. "The idea that the State was planning to strap this tiny, frail, dying old man to a chair and force him to breathe toxic gas into his failing lungs is simply barbaric,

He died at the Louisiana State Penitentiary in Angola, located in the eastern part of the state. Lawyers for Sepulvado in a statement announcing his death said he suffered from severe physical and mental decline in recent years.