Mexican President Andrés Manuel López Obrador is asking the warring factions of the Sinaloa cartel terrorizing the capital city of Culiacán to act "responsibly” so no one else gets killed.

Heirs of cartel founders are fighting over the capture of boss Ismael “El Mayo” Zambada, who pleaded not guilty to drug charges in a New York court on Friday.

Authorities in the western Mexican state of Sinaloa on Thursday canceled national day celebrations and shut schools on the back of escalating violence stemming from internal Sinaloa Cartel fighting, which has left 12 people dead since Monday.