Three cases remain before the U.S. Supreme Court. One was brought by St. Louis County prosecutors, who do not support Williams’ conviction or upcoming execution.

Missouri is set to execute 55-year-old Marcellus Williams on Tuesday despite opposition from the state’s prosecuting attorney and the victim’s family.

Bonne Terre, a city in Francois County about 60 miles southwest of St. Louis. Williams was convicted of first-degree murder for the slaying of 42-year-old Lisha Gayle, a former reporter for the St.