The Florida Supreme Court has stayed convicted killer Manuel Valle's execution so a judge can hear arguments over the use of a new lethal injection drug.
The justices on Monday delayed the execution for a month, from Aug. 2 until Sept. 1, absent further order of the high court.
Valle was convicted of killing a Coral Gables police officer 33 years ago.
Florida and several other states have been forced to seek alternatives to sodium thiopental, part of a three-drug cocktail used in lethal injections.
That's because the sedative's sole U.S. manufacturer has stopped making it.
Florida last month adopted a new procedure that substitutes pentobarbital.
Valle's lawyers contend the new drug's use will subject him to "substantial risk of harm."