The Federal Police captured Édgar Huerta Montiel , alias '' El Wache '' , a high-ranking lieutenant of Los Zetas and the main person responsible for the killings of the 72 immigrants , on 17 June 2011 in Fresnillo , Zacatecas . Huerta Montiel was an army deserter before joining Los Zetas . Huerta Montiel was the boss of Martín Estrada Luna , alias '' El Kilo '' , one of the main perpetrators for the second massacre in San Fernando , where 193 corpses were exhumed from clandestine mass graves . After his apprehension , he confessed to have ordered the abduction of the buses where the immigrants were traveling in . The captured lieutenant confessed to have personally killed 10 immigrants , and mentioned that he had kidnapped other buses with immigrants near San Fernando , Tamaulipas to steal their money , torture them for information and see if " they were not working for the Gulf Cartel . " He mentioned that those killed were going to be recruited by Samuel Flores Borrego , a high-ranking lieutenant of the Gulf Cartel , and that those who were not were released
second massacre
2011 San Fernando massacre
2010 San Fernando massacre