Whose authority were the Mexican police under that had a shootout with the CJNG in 2015?
2015 Tanhuato–Ecuandureo shootout:  When they tried to pull over the vehicle, however, the men onboard opened fire at the police units. 2015 Tanhuato–Ecuandureo shootout:  A vehicle chase ensued and the security forces made their way into a large, rural property where the shootout intensified.
i don't know