Woman wanted on Canada-wide warrant arrested in Calgary for 2024 Richmond Hill homicide
Katherine Bergeron-Pinzarrone, 27, charged with second-degree murder in death of 16-year-old Montreal boy, ending nearly two-year search.
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York Regional Police confirmed Wednesday that Katherine Bergeron-Pinzarrone, 27, of Mississauga, was arrested July 9 in Calgary by the Calgary Police Service on a Canada-wide warrant in connection with a 2024 homicide in Richmond Hill.
Bergeron-Pinzarrone is charged with second-degree murder in the death of a 16-year-old male from Montreal. The case dates to August 8, 2024, when officers were called to a local hospital around 6 a.m. after a stabbing victim arrived with life-threatening injuries. The teen was pronounced dead shortly after. Police also identified two male suspects—Lensly Francois, 31, of Saint-Hubert, Que., and William Gallant, 26, of Quebec City—as linked to the homicide and to an alleged auto theft ring.
YRP partnered with the BOLO Program and Calgary Police Service to locate Bergeron-Pinzarrone as investigators tracked her movements across Canada. Deputy Chief Ryan Hogan praised the collaboration. "Through the dedicated work of our Homicide Unit and our partnership with the BOLO Program and the Calgary Police Service, the suspect in this homicide investigation has been located and arrested," he said. "This arrest marks an important step in seeking justice for the victim and his family."
The investigation remains active. Anyone with additional information is asked to contact the YRP Homicide Unit.
The facts
Who was arrested in connection with the Richmond Hill homicide?
Katherine Bergeron-Pinzarrone, 27, of Mississauga, was arrested on July 9, 2026, in Calgary on a Canada-wide warrant for second-degree murder in the death of a 16-year-old male from Montreal.
When did the Richmond Hill stabbing occur?
The stabbing occurred on August 8, 2024, when the 16-year-old victim arrived at a local hospital around 6 a.m. with life-threatening injuries and was pronounced dead shortly after.
Who else has been identified as linked to the homicide?
Lensly Francois, 31, of Saint-Hubert, Que., and William Gallant, 26, of Quebec City, have been identified as male suspects linked to the homicide and to an alleged auto theft ring.
