“In Sinaloa, the sale, manufacture, transport or any other business dealing with fentanyl, is strictly prohibited, including the sale of chemicals used to produce it,” the banners read. “You have been warned. Respectfully, Los Chapitos.”
Mexican authorities have not confirmed the authenticity of the banners and ABC News was unable to verify that they were in fact issued by Los Chapitos. But sources in the region said the banners are legitimate.
Fentanyl has become a top priority in the bilateral security relationship between Mexico and the United States, after the powerful synthetic opioid caused tens of thousands of overdose deaths among Americans this year alone.
