Medellín Cartel | cartel | Sinaloa Cartel | Medellin Cartel | Colombian Party Cartel | Cartel | Arturo Beltrán Leyva | Villa de Leyva | Pío Leyva | Los Beltrán | Infighting in the Gulf Cartel | Graciela Beltrán | Colima Cartel | Cartel (band) | Vicente Carrillo Leyva | Sinaloa cartel | Juárez Cartel | Guadalajara Cartel | Cartel (ship) | Carlos Beltran | Cali Cartel | Brother Tony Leyva | Beltrán de la Cueva |
Sergio Enrique Villarreal Barragán, a.k.a. El Grande, (b. September 21, 1969), is a former Mexican federal police officer who then worked as a lieutenant for Arturo Beltrán Leyva of the criminal organization called the Beltrán Leyva Cartel.
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Allegedly, he was hired by the Beltrán Leyva Cartel and by 2007 he rose to the rank of lieutenant for Arturo Beltrán Leyva.