Miguel "El Gringo" Villarreal

During 2011 and 2012 Mexican media outlets reported on two occasions that Villarreal had been killed in an armed confrontation with either rival drug traffickers and Mexican law enforcement officers. By that point, rival factions within the Gulf Cartel were fighting each other for control of Tamaulipas and the cartel. Although not officially confirmed, Stratfor intelligence agency reported that Villarreal was killed in a three-hour gunfight that left at least three dozen dead in Reynosa, Tamaulipas on 10 March 2013. The shootout was caused by an attempt by Mario Ramírez Treviño, another high-ranking drug lord of the Gulf Cartel, to remove his rivals and become the undisputed leader of the cartel. Provided by Wikipedia