- Why has Alabama executed a man using nitrogen gas?BBC.com
- Alabama carries out first known execution with nitrogen gas in the US. Now the attorney general expects more states to followCNN
- Alabama attorney general says he believes more nitrogen gas executions will take place after first in US carried outABC News
- Alabama Inmate Is First in U.S. to Be Executed by Nitrogen GasThe Wall Street Journal
- Alabama death row inmate executed with nitrogen gas, nation’s first by a new method in 42 yearsFox News