Mount Prospect police want help from any witnesses who may have seen the collision that killed a 64-year-old pedestrian during the weekend.
Zofia Wilhelm, 64, of Des Plaines, was struck by a bus at about 7 p.m. Saturday near the intersection of Elmhurst Road and Algonquin Road in Mount Prospect.
She was taken to Lutheran General Hospital in Park Ridge, where she underwent surgery but died early Sunday.
The driver, a 25-year-old Chicago man, was operating a privately owned bus. He was not injured.
Authorities did not say if charges would be filed against the man.
An autopsy for Wilhelm by the Cook County Medical Examiner's office is pending.
On Monday, police asked anyone who may have witnessed the collision to call the major accident investigation team at (847) 870-5656.