Police said the vehicle may have been abandoned when the child was discovered inside and are concerned for her safety.
She is described as about three-feet tall with black shoulder length hair and brown eyes.
Toronto police are searching for a vehicle that has been stolen with a 4-year-old girl inside.
Christina Nyuyen was last seen in a vehicle around 6 this morning.
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He said police don't have any information about a possible suspect.
Police said the child was inside a vehicle when it was stolen from outside a home on Romanway Crescent around 6 a.m.in the area of Jane Street and Lawrence Avenue.
The auto, a 2008 Toyota Camry with the licence plate BHVH392, was later seen near Highway 401 and Highway 403.
She was wearing a red winter jacket and a white hat.
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Police said they had no information whether the suspect had any connection to the Nguyen family, but Dhillon said it appears to have been a crime of opportunity in which the suspect spotted the auto with the keys in the ignition. Typically, when the culprit realizes their mistake they abandoned the auto.
A family member named Tony Lam later emerged from the Nguyen home to offer their thanks to the Toronto Police Service as well as local news outlets who helped broadcast the Amber Alert.
The girl's mother put her in the auto, and started the engine to warm up. Christina's state of mind seemed quite good from evidence at a distance as she was calm and gave both police and paramedics a high-five as she left the scene.
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