Police in Mexico said they have killed 19 gunmen in a shootout. Five police officers were also injured in the confrontation.
Cristobal Castaneda, undersecretary for public security, told the media on Saturday that the police-gunmen clash started on Friday evening, Xinhua news agency reported.
The gunmen had just killed two men from a rival gang when they were surprised by a large contingent of police who happened to be in the neighbourhood. They also alerted the army troops in the area, who chased the gang members and caught up with them in Aguaje de Costilla, Castaneda said.
The security forces seized some 20 weapons and three pick-up trucks from the gang.
The region has seen fierce in-fighting in the powerful Sinaloa drugs cartel since the arrest of its leader, Joaquín "El Chapo" Guzman, in January 2016.
This was one of the worst clashes, the Mexican media said.