Whose authority were the Mexican police under that had a shootout with the CJNG in 2015?
2015 Tanhuato–Ecuandureo shootout: On May 22, 2015, a three-hour shootout broke out between the Mexican Federal Police and alleged members of the Jalisco New Generation Cartel (CJNG) in Tanhuato and Ecuandureo, Michoacán, leaving 43 dead. 2015 Tanhuato–Ecuandureo shootout:  A vehicle chase ensued and the security forces made their way into a large, rural property where the shootout intensified. Federal Police (Mexico): The Federal Police (Spanish: "Policía Federal, PF" ), formerly known as the "Policía Federal Preventiva" (Federal Preventive Police), is a Mexican police force under the authority of the Secretariat of the Interior.
i don't know