The story so far · 2 days, October 8 to 9, 2026
One Turn followed this story across 2 editions, from Mazatlán, Sinaloa, Mexico on October 8, 2026. Newest first.
The Sinaloa Cartel split into warring factions, including Los Chapitos linked to Joaquín 'El Chapo' Guzmán's sons, after major arrests in 2024. Sinaloa state has since seen sustained violence.
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Twelve people, including a two-year-old, were killed and 16 injured in fighting between Sinaloa Cartel factions inside a prison in Mazatlán. It was reportedly an attempt on a Los Chapitos leader, who was said to be among the dead.
Why it matters: Violence reaching inside prisons shows the depth of the Sinaloa Cartel's internal war and challenges state control.
Sources: Mexico News Daily · See it on the globe
Rival Sinaloa Cartel factions clashed inside El Castillo prison in Mazatlán, killing 12 people including a 2-year-old and injuring 16. It was reportedly an attempt to kill Los Chapitos leader Eduardo Jonathan Martínez Larios, who was reported among the dead.
Why it matters: The violence shows how the Sinaloa Cartel's internal war reaches even inside state prisons.
Sources: Mexico News Daily · See it on the globe