Twenty-eight years since someone killed college student Tammy Zywicki, Illinois State Police want everyone to know that investigators are still looking for whoever did it. Yesterday marked the anniversary of the 21-year old Zywicki leaving Evanston for Grinnel College, leaving her car along Interstate 80 near Utica, and disappearing. Her body was found a week later in Missouri. No one has ever been charged with the murder. State Police are still asking for tips at 815-726-6377.

Collection of Tammy Zywicki photos Illinois State Police distributed Sunday.

A picture of Tammy Zywicki’s car. It was found abandoned along Interstate 80 in LaSalle County on August 23, 1992.