About 12:40 p.m., police and fire officials responded to the intersection of Deerfield and Piccadilly roads for a bicyclist struck by a vehicle, Highland Park Mayor Nancy Rotering said on Facebook.
The bicyclist was taken to Condell Medical Center in Libertyville, where she died, the mayor said.
She was identified by the Lake County Coroner's Office at the hospital as 49-year-old Maureen Wener. A preliminary autopsy Friday showed she died from blunt force injuries.
The striking vehicle left the scene, according to Rotering. Deerfield Road reopened hours after the crash.
Anyone with information about the crash is asked to contact police at 847-432-7730 or firstname.lastname@example.org.