Tammy Zywicki case will be explored on March 22 TV program

The 1992 disappearance and death of Tammy Jo Zywicki, the Iowa college student last seen after her car broke down on Interstate 80 near La Salle, will be the focus of a Monday, March 22 “People Magazine Investigates” program.

The episode, titled “Highway Horrors,” is scheduled to air at 9 p.m. on Investigation Discovery and discovery+ and serve as the premiere for the fifth season of “People Magazine Investigates.”

Illinois State Police continue to investigate the case.

Police were hopeful last May when authorities in Iowa apprehended a long-haul trucker who’s been implicated in three women’s slayings in the 1990s and who, The Associated Press reported, could be responsible for other unsolved homicides.

A day after after, however, State Police released this statement: “At this time, (he) does not appear to have been involved with the murder of Tammy Zywicki, who was abducted and murdered by an unknown assailant after experiencing vehicle troubles alongside I-80 near La Salle, Illinois in August 1992.”

The episode will explore the role DNA advances may play in catching Zywicki’s killer.

Anyone with information about the Zywicki investigation, is asked to Illinois State Police, Division of Criminal Investigations Zone 3 at (815) 726-6377. Callers can remain anonymous.