ST. LOUIS (AP) - A Missouri inmate scheduled to be put to death next week is asking the Missouri Supreme Court to halt the execution.
John Winfield faces execution June 18 for killing two women in St. Louis County in 1996. In a court filing on Monday, attorneys for Winfield say it is unconstitutional for the state to execute him with "an unregulated compounded drug, from an undisclosed supplier, made of unknown ingredients, and through unknown processes."
Missouri is among several states that refuse to disclose the source of their execution drugs.
Winfield also has appeals pending before the 8th U.S. Circuit Court of Appeals and the U.S. Supreme Court.
He would be the seventh person put to death in Missouri since November.
© Associated Press
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