 However, the Guadalajara Cartel suffered a major blow in 1985 when the group's co-founder Rafael Caro Quintero was captured, and later convicted, for the murder of DEA agent Enrique Camarena.Félix Gallardo afterwards kept a low profile and in 1987 he moved with his family to Guadalajara.According to Peter Dale Scott, the Guadalajara Cartel prospered largely because it enjoyed the protection of the Dirección Federal de Seguridad (DFS), under its chief Miguel Nazar Haro.