The Gulf Cartel, along with their rival group Los Zetas, have been the two drug cartels with the most kidnappings in all of Mexico, and "more than half of the country's kidnappings are attributed to them." And, there are several kidnapping rings of the Gulf Cartel throughout several parts of Tamaulipas. The Mexican military mentioned that in the states of Tamaulipas and Nuevo Leon, where the Gulf Cartel and Los Zetas fight for territory, abductions are carried out very commonly. An intelligence agency mentioned that the Gulf Cartel kidnaps for three reasons: