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.
Luis Fernando Sánchez Arellano Luis Fernando Sánchez Arellano (b. ca. 1977), commonly referred to by the alias El Ingeniero ("The Engineer"), is a Mexican suspected drug lord and former leader of the Tijuana Cartel, a drug trafficking organization based in Tijuana, Baja California. He competed with three other major cartels, the Juárez Cartel, the Gulf Cartel, and the Sinaloa Cartel, for the illegal drug corridors into the United States.