The Brief Chicago police are asking for the public's help identifying a dirt bike rider involved in a serious hit-and-run on the Lakefront Trail. Investigators say a 45-year-old woman suffered significant injuries after she was struck on July 20 in the Gold Coast neighborhood. A woman suffered catastrophic injuries after police say she was struck by a dirt bike rider in a hit-and-run on Chicago's Lakefront Trail, and investigators are now asking for the public's help identifying the person responsible. CPD seeks Gold Coast hit-and-run suspectThe backstory:Police said the crash happened around 3:47 p.m. on July 20 near 1400 North Lake Shore Drive in the Gold Coast neighborhood. The woman suffered significant injuries and the man left the scene after the crash, police said.