CHICAGO (AP) -- Nearly 10 years after Grinnell College student Tammy Zywicki was abducted and killed on her way back to the Iowa school, the FBI renewed its plea to the public Thursday for information that might help in the unsolved case.
FBI Special Agent in Charge Thomas J. Kneir said a $50,000 reward was being offered for any information leading to the arrest and conviction of whoever was responsible for the kidnapping and murder.
``We're using the somber occasion of the tenth anniversary of Tammy's disappearance to refocus the public's attention to this heinous crime,'' Kneir said.
He said the FBI and Illinois State Police believe members of the public have information that could help solve the case.
Zywicki, 21, a New Jersey resident, had driven her brother to Northwestern University in Evanston before proceeding on to Grinnell. She left Evanston on the afternoon of Aug. 23, 1992, and her abandoned car was found later that day parked along Interstate 80 near LaSalle in central Illinois.
The missing woman's body was found a week later near Interstate 44 in rural Lawrence County, Mo., about halfway between Springfield and Joplin. Authorities said she had been stabbed to death.
There were reports after Zywicki's disappearance that a tractor-trailer was seen parked near her car about the last time she was seen alive. The semi driver was described as a white male between 35 and 40 years of age, over six feet tall and with dark, bushy hair.