The alleged leader of the Zetas drug carteL, Oscar Omar Trevino, aka "Z-42" is taken under custody to be presented to the press at the Attorney General Office's hangar at the airport in Mexico City, on March 4, 2015. Mexican authorities captured Trevino Wednesday, dealing a blow to the feared gang and giving the embattled government a second major arrest in a week. The suspect known as "Z-42" was detained by federal police and soldiers in San Pedro Garza Garcia, an upper-class suburb of the northern industrial city of Monterrey, Nuevo Leon state, two federal officials said. AFP PHOTO/ALFREDO ESTRELLA