In the late 1990s, Osiel Cárdenas Guillén, the former leader of the Gulf cartel, had other similar groups besides Los Zetas established in several cities in Tamaulipas.
Lázaro Cárdenas | Leo Cárdenas | Nicolás Guillén | Lázaro Cárdenas, Michoacán | Laurice Guillen | José Guillén | Ozzie Guillén | Guillén | Cárdenas | Osiel Cárdenas Guillén | Micha Cárdenas | García López de Cárdenas | Carlos Guillén | Alonso de Cárdenas | ''Untitled'' (1961), sculpture by Auguste Cardenas in the area above the Roman quarry in Sankt Margarethen im Burgenland | Roy Mitchell-Cárdenas | René Cárdenas | Ozzie Guillen | Olimpo Cárdenas | Guillén de Castro y Bellvis | Francisco Arias Cárdenas | Cuauhtémoc Cárdenas | Antonio Cárdenas Rodríguez | Antonio Cárdenas Guillén |
After the death of his uncle, Antonio Cárdenas Guillén (a.k.a. Tony Tormenta) in 5 November 2010, infightings within the Gulf Cartel triggered, and Cárdenas Vela faced problems with Jorge Eduardo Costilla Sánchez (a.k.a. El Coss) and other Gulf cartel members, who at one time worked along his uncle Osiel Cárdenas Guillén.