Brothers Miguel and Omar Trevino Morales — aliases "Z-40" and "Z-42" — led one of Mexico's most powerful and feared organized crime groups until its collapse.

Miguel Angel Treviño Morales, alias Z-40, the feared leader of the Zetas, the man who had put a hit on the very same U.S. investigator and later threatened the messenger—me—was in custody.

Con el amparo, Benito ‘N’ buscaba protegerse de una denuncia de vecinos del Fraccionamiento Las Calzadas en San Pedro Garza ...

Miguel Angel Treviño Morales, left, was busted soon after the money laundering operation went down. Courtesy of Apple It also would have been a narco terrorist dream.

Miguel Angel Treviño Morales, left, was busted soon after the money laundering operation went down.© Courtesy of Apple Mexican officials present various members of Los Zatas drug cartel after a ...

Omar Trevino Morales, alias "Z-42," allegedly took over the Zetas after his older brother Miguel Angel was captured by marines in the northeastern state of Tamaulipas in July 2013.

Miguel Trevino Morales, also known as Z-40, and Omar Trevino Morales, also known as Z-42, were the ex-leaders of Los Zetas, a violent cartel made up of former Mexican military officers that ...

Brothers Miguel and Omar Trevino Morales led one of Mexico's most powerful and feared organized crime groups.

The Zetas were once known as one of the deadliest drug cartels in Mexico, led by brothers Omar Treviño Morales and Miguel Angel Treviño Morales. But then, the four-legged animals got involved.

MEXICO CITY - Miguel Angel Treviño Morales, the notoriously brutal leader of the feared Zetas drug cartel, was captured before dawn Monday, officials announced.