 The antagonism lasted for several years and was accompanied by violent acts in the states of Baja California, Sonora, Sinaloa, Durango, Jalisco, Guerrero, Michoacán and Oaxaca.In 1989, "El Chapo" Guzmán sent Armando López (alias "El Rayo"), one of his most-trusted men, to speak with the Arellano Félix in Tijuana.Before he had a chance to speak face-to-face with them, López was killed by Ramón.