Army soldiers stand guard over alleged regional Zeta cartel boss Luis Jesus Sarabia, alias "Pepito Sarabia" and "Z-44," left, during his presentation to the press after his arrest at the Organized Crime Investigations Unit (SIEDO) headquarters in Mexico City, Mexico Friday Jan. 13, 2012. The other suspect is Jose Rolando de los Santos Herrera who was with Sarabia at the time of his arrest. According to the SIEDO report, Sarabia is an alleged leader of the Zetas drug gang in three northern Mexican states. Sarabia is also suspected in the killing of a U.S. immigration agent last year. (AP Photo/Christian Palma)