Prosecutors: Inmate confessed to killing 4 women in 1990

CLAYTON, Mo. (AP) — Authorities from several St. Louis-area jurisdictions believe they’ve solved a serial killer case that dates back more than three decades. Prosecutors from Lincoln, St. Charles and St. Louis counties on Monday announced four new counts of first-degree murder filed against 73-year-old Gary Muehlberg, who already is serving a life sentence for…