A medical report describes a "frantic" scene in the death chamber as Alabama prison officials failed to find a viable vein.
Three months after Ohio tried to execute Alva Campbell, the convicted murderer died on death row. He had serious health problems, his lawyer said.
Doyle Lee Hamm's execution was aborted last week. His lawyer says he was tortured during a two-hour attempt to find a good vein for the lethal injection.
The governor decided Thomas Whitaker, who killed his mother and brother, will not be executed.
Three Milwaukee County jail staffers are facing criminal charges following the 2016 dehydration death of mentally ill inmate Terrill Thomas.