ST. LOUIS (AP) — A 34-year-old St. Louis man imprisoned for two decades in a teenager's dance hall death could go free, two weeks after a Cole County judge overturned his conviction.

Anthony Williams' attorney says she expects her client to be released Thursday, after negotiating a compromise with St. Louis Circuit Attorney Jennifer Joyce.

The Jefferson City judge threw out Williams' conviction in the December 1993 shooting death of 14-year-old Cortez Andrews, citing potentially helpful evidence that Williams' lawyers never received from prosecutors.

Williams was also 14 then but was certified to stand trial as an adult. He's been serving a life sentence without parole after a city jury found him guilty of first-degree murder.

The June 18 court order requires Joyce to either file new murder charges or release Williams by Thursday.