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Three people are killed and five more injured in two separated mass shootings at two drug rehabilitation
[https://www.jornada.com.mx/noticia/2026/11/01/estados/atacan-centros-de-rehabilitacion-en-mazatlan-y-matan-a-3-personas ( La Jornada )]

Context: Infighting in the Sinaloa Cartel — part of the Infighting in the Sinaloa Cartel story.
Three people are killed and five more injured in two separated mass shootings at two drug rehabilitation centers in Mazatlán, Sinaloa, Mexico. [https://www.jornada.com.mx/noticia/2026/11/01/estados/atacan-centros-de-rehabilitacion-en-mazatlan-y-matan-a-3-personas ( La Jornada )]
Event summary via Wikipedia Current Events (2026-11-02).