York Regional Police say a woman was found by herself in the Highway 400 and Rutherford Road area.
Police say the woman seemed confused. They were concerned she couldn't care for herself.
The woman was taken to hospital. Police have not been able to determine her identity.
Police say the woman is five feet two inches tall and weighs 110 pounds. She has a thin build and is believed to be between 18 and 22 years old. She has black, curly hair and brown eyes. She speaks English.
Police are asking for the public's help in identifying her. Anyone with information is asked to call 1-866-876-5423, ext. 7241.
Information can also be passed along to police through Crime Stoppers at 1-800-222-8477.
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