Police in Ontario have issued a Canada-wide warrant for a woman they allege abducted her nine-year-old daughter, prompting an Amber Alert over the weekend.

Niagara regional police say Layla Sabry and her mother Allana Haist were last seen on Thursday evening in Welland, Ont.

Layla's case continues to be treated as a missing person investigation but police said Saturday that enough time had elapsed that they concluded the Amber Alert.

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Police are asking anyone with information regarding the girl or her mother's whereabouts to contact them.