"I didn't do anything to be in here," Miller said in his final words, the AP reported. His words were at times muffled by the blue-rimmed gas mask that covered his face from forehead to chin. Miller asked his family and friends to "take care" of someone, but it was not clear whose name he said.

Alan Eugene Miller, 59, was pronounced dead at 6:38 p.m. local time at a south Alabama prison. Miller was convicted of killing three men — Lee Holdbrooks, Christopher Scott Yancy and Terry Jarvis — in 1999 and the state had previously attempted to execute him by lethal injection in 2022.