Mexican police said they had killed 19 gunmen in a shootout in the northern state of Sinaloa. Five police officers were injured in the confrontation. The region has seen fierce in-fighting in the powerful Sinaloa drugs cartel since the arrest of its leader, Joaquín "El Chapo" Guzmán, last year.
Essentials
Other gangs in L.A.
Background
Leadership
Operations
Allegations of collusion with Mexican federal government forces
Allegations of collusion with the US federal government