MONTERREY, Mexico (AP) — Authorities say they have captured an alleged member of the Zetas drug gang who confessed to killing at least 75 people in northern Mexico.Nuevo Leon state Attorney General Adrian de la Garza says Enrique Elizondo Flores told investigators 36 of his victims were bus passengers traveling through the town of Cerralvo, near the border with Texas.De la Garza said Monday that Elizondo was detained Jan. 20 but that authorities needed to verify details of his confession before announcing his arrest.De la Garza says the 35-year-old suspect told investigators he was in charge of stopping the arrival of the rival Gulf drug cartel members to the towns of Cerralvo and General Trevino.