Overview

• Alan Eugene Miller, convicted of a 1999 workplace shooting that killed three men, was executed in Alabama using nitrogen gas on Thursday.
• Miller's execution marked the second use of this method in the U.S., following Kenneth Eugene Smith's execution in January, also in Alabama.
• Witnesses reported that Miller shook and trembled for about two minutes and gasped for air for six more minutes before dying.
• Alabama officials argue the method is humane, but critics point to Miller's visible suffering as evidence to the contrary.
• Miller's execution follows a failed 2022 lethal injection attempt, where prison staff struggled to find a vein for over an hour.