"El Ricky" was arrested this week. He's accused of leading several operations against law enforcement, including an attack on ...

"El Borrado" was named as the current leader of the criminal organization ... identified as owners of boat camps that enable the Gulf Cartel to charge fishermen wanting to cross into U.S. waters.

Gulf Cartel boss Osiel Cardenas Guillen’s son-in-law pleaded guilty to extortion and money laundering charges Thursday.

JSO’s announcement came 30 days after the Gulf Cartel’s former leader, Osiel Cardenas-Guillen, 57, was released from a federal prison. Cardenas-Guillen served 25 years behind bars for drug ...

There had been nervousness about the impending return of Cárdenas Guillén, who once led the feared Gulf cartel in northeastern Mexico before he was arrested and extradited to the United States ...

Cárdenas Guillén’s nickname was "El Mata Amigos," or "The one who kills his friends," and the 57-year-old once moved tons of cocaine and made millions of dollars while leading the Gulf cartel ...

The alleged leader of a Sinaloa cartel faction appeared in San Diego federal court Thursday on charges related to the trafficking of major quantities of drugs. Octavio Leal-Hernandez, 44 ...