The Amber alert request by Hamilton Police regarding the alleged abduction of a 13-year-old boy has ended.
The teen has not yet been located, but police are continuing their child abduction investigation.
Police are trying to find Austin Large, 13. The Ancaster boy is described as a white male, five-foot-five-inches tall and 160 pounds. He has a heavy build, brush cut, light brown hair and blue eyes.
Police say the teenager is autistic and does not have his medication.
Austin is believed to be with his father Elias Large, who drives a 1999 GMC Sierra truck with a large tool box.
The truck's Ontario licence plate bears the number NE7 917.
The boy was not returned to his mother after going away for a fishing trip on Friday with his father. Austin's parents are estranged and he was expected home on Monday.
Police have learned the pair did not go to Lake Nipissing as planned. They say the boy rarely goes on trips with his father.
The search for the pair has been focused in the Manitoulin Island area, where police received a tip that the pair were spotted on a boat. A woman had spotted the teen's unusual behaviour (she was unaware that the teen had autism), and called police after seeing the Amber alert.
Police do not usually issue Amber alerts when a child is suspected to be with a parent, however they did so in this case because Elias Large's recent behaviour had been erratic and out of character, and he was being investigated on a "domestic related incident." Elias Large is not formally charged.
Police are concerned about the well-being of both the father and the son.
People who spot the pair are asked to call 911 immediately.
Amber alerts are named after Amber Hagerman, a 9-year-old girl who was kidnapped and murdered in 1996 in Arlington Texas.
With files from The Canadian Press.
