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.

Lawyers for Marcellus Williams, who maintains his innocence, argued Monday the execution should be halted over the exclusion of a potential Black juror.

Lawyers for a Missouri man have filed a late appeal with the U.S. Supreme Court alleging there were racial bias and constitutional errors at his trial.