Mexican police say they have killed 19 gunmen in a shootout in the northern state of Sinaloa.
Five police officers were injured in the confrontation.
It started on Friday night in the town of Villa Union and ended after a multiple car chase in Aguaje, a few kilometres away - both in Mazatlán.
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.
The security forces seized some 20 weapons and three pick-up trucks from the gang.
This was one of the worst clashes in the south of Sinaloa in recent months, local media reported.