1992 kidnapping and murder case remains active as authorities seek person of interest

Authorities are seeking information about a person of interest in an unsolved 34-year-old kidnapping and murder case. Tammy J. Zywicki went missing Aug. 23, 1992, while on her way back to college in Grinnell, Iowa, after dropping her brother off at Northwestern. The New Jersey native was last seen that same day between 3 and 4 p.m. in LaSalle County with her broken-down car, according to Illinois State Police, which continues to investigate her death in partnership with the FBI. Her car — a…