Mario Cárdenas Guillén is the brother of the Mexican drug lord who was the former leader of what group?
Mario Cárdenas Guillén Mario Alberto Cárdenas Guillén is a former leader of the Mexican criminal group called the Gulf Cartel. He is the brother of Osiel Cárdenas Guillén and Antonio Cárdenas Guillén.
Operation Quintana Roo Operation Quintana Roo (Spanish:"Operacion Quintana Roo") is an anti-drug trafficking military operation jointly conducted by the Mexican army and navy in the Mexican state of Quintana Roo. The operation began in early February 2009 after the death of former Brigadier General Mauro Enrique Tello Quiñónez and two other men.