A 21-year-old Windsor man faces a charge of aggravated assault from an attack on the Ganatchio Trail.
Police were called Sunday morning at about 8 for an assault in progress and found a 75-year-old woman unconscious near Riverdale Avenue
She was rushed to hospital with serious head injuries.
Habibullah Ahmadi, who goes by the name Daniel, is charged.
An area of Little River Road was cordoned off for several hours for an investigation.
The Windsor police Major Crimes Unit is continuing to investigate the incident.