Osiel Cardenas Guillen, 57, was serving a 25-year sentence in a U.S. maximum security prison before he was handed over to immigration enforcement officers in August. A member of Los Zetas ...

The United States has released Osiel Cardenas Guillen, former leader of the Gulf Cartel and founder of the Zetas, an armed organization that played a salient role in violent turf wars that marked ...

Paramedics work on Juan Jesús Guerrero Chapa, a personal lawyer for Gulf cartel boss Osiel Cárdenas, after removing his body from the Range Rover where he was shot by masked assassins in a hit ...

Ezequiel Cardenas Guillen, known as "Tony Tormenta", was killed ... Cardenas was the brother of former Gulf cartel leader Osiel Cardenas, who was extradited to the US in 2007.