This became a key factor influencing the break between the Sinaloa Cartel and the Beltrán Leyva brothers, five brothers who served as Guzmán's top lieutenants, primarily working for the cartel in the northern region of Sinaloa. Sinaloa lawyer Loya-Castro, who like Guzmán had been wanted on federal charges in the United States since 1993, voluntarily approached the DEA offering them information in 1998, eventually signing paperwork as a formal informant in 2005, and his U.S. indictment was thrown out in 2008. Loya-Castro's leaks to the DEA led to the dismantling of the Tijuana Cartel, as well as the Mexican Army's arrest of Guzmán's lieutenant and the top commander of the Beltrán Leyva organization, Alfredo Beltrán Leyva (also known as "El Mochomo", or "Desert Ant"), in Culiacán in January 2008, with Guzmán believed to have given up El Mochomo for various reasons. Guzmán had expressed concerns with Alfredo Beltrán's lifestyle and high-profile actions for some time before his arrest. After El Mochomo's arrest, authorities said he was in charge of two hit squads, money laundering, transporting drugs and bribing officials.