A federal appeals court has granted a stay of execution for a Missouri inmate, hours before he was scheduled to die for killing a southeast Missouri man in 1996.
The 8th US Circuit Court of Appeals on Tuesday (local time) cited concerns about Russell Bucklews' rare medical condition, which raised the risk of "unnecessary pain and suffering by the inmate".
It was not immediately clear if the state would appeal to the US Supreme Court.
Bucklew suffers from a rare condition that causes weakened and malformed veins.
It would have been the first execution in the nation following a botched lethal injection last month in Oklahoma.