WAUCONDA – Lake County Sheriff’s deputies are investigating a fatal crash involving a three-wheeled motorcycle along Route 12.

About 1 p.m. July 18, sheriff’s deputies were dispatched to Route 12 and Lake Shore Drive near Wauconda for a traffic crash with injuries. Sheriff’s deputies arrived and found two people with critical injuries.

Preliminary investigation shows a Ford Escort, driven by a 65-year-old Downers Grove woman, was stopped in the inside lane of southbound Route 12 because of a mechanical issue. A Harley-Davidson Tri Glide Ultra Classic, driven by a 69-year-old Northbrook man, was traveling south in the inside lane of Route 12. The driver of the Harley-Davidson struck the Ford, causing the Harley-Davidson to roll several times. The driver and his passenger, a 63-year-old Northbrook woman, were thrown from the Harley-Davidson.

The passenger of the Harley-Davidson was taken to Advocate Condell Medical Center in Libertyville, where she was pronounced dead. The driver of the Harley-Davidson also was taken to Advocate Condell Medical Center, where he was listed in critical condition. He died July 22, according to the Lake County Coroner’s Office.

The deceased have been identified as 63-year-old Laura Siano and 69-year-old Joseph Siano of Northbrook. Autopsies performed July 19 at the Lake County Coroner’s Office indicated Laura and Joseph Siano died from blunt force injuries as a result of the crash.

The driver of the Ford and her passenger, a 67-year-old Naperville woman, were uninjured.