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. One of the fatalities was a Federal Police officer, while the others were suspected to be organized crime members. The confrontation started when the Federal Police spotted a suspicious vehicle on a highway. The authorities had received information that one of the properties in the area had been overrun by criminals. Unconfirmed reports suggested that the CJNG leader Nemesio Oseguera Cervantes was in the area. When they tried to pull over the vehicle, however, the men onboard opened fire at the police units. A vehicle chase ensued and the security forces made their way into a large, rural property where the shootout intensified. The Federal Police then called for ground and air reinforcements and neutralized the situation.
Héctor Luis Palma Salazar Héctor Luis Palma Salazar (a.k.a.: "El Güero Palma") is a former Mexican drug trafficker and former leader of the Sinaloa Cartel alongside Joaquín "El Chapo" Guzmán. Palma was arrested on June 23, 1995 and deported to the United States, where he served a jail sentence until June 2016. He was then extradited back to Mexico in June 2016, where he was charged with a double murder in 1995, in Nayarit.