The U.S. Supreme Court has declined to hear a death row inmate's challenge to Mississippi's method of execution by injection.
The court issued its order without comment Monday.
The 5th U.S. Circuit Court of Appeals last November upheld a Mississippi federal judge's dismissal of a lawsuit filed by Roger E. Thorson against Corrections Commissioner Christopher Epps.
A three-judge panel of the 5th Circuit said most of Thorson's claims about the protocol were speculation.
Thorson was sentenced to death for killing a former girlfriend on the Mississippi Gulf Coast in 1987.
Thorson's case marked the second time the 5th Circuit had considered a challenge to Mississippi's lethal injection protocol.
In 2008, a challenge was brought by Leo Dale Bishop and was rejected. Bishop was executed for his role in a 2000 slaying.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or firstname.lastname@example.org.