Authorities have found a message exposing the conflict between the faction led by Mayo Zambada’s sons and Los Chapitos ...

Zambada, 76, the cartel’s co-founder, was long believed to have police, soldiers and political leaders in his pocket. But the new statement includes unprecedented admissions of those ties.

Violence has soared in Sinaloa since the capture in the U.S. of cartel co-founder Ismael "El Mayo" Zambada almost a year ago.

Zambada said in a letter that he was kidnapped in Mexico and brought to the U.S. by Guzmán López, son of imprisoned Sinaloa co-founder Joaquín "El Chapo" Guzmán.

Mexican authorities in Sinaloa state said 20 people were killed, including some who were decapitated, in the latest episode ...

Zambada, 76, was taken into custody after he arrived at a small airport near El Paso, along with Joaquín Guzmán López, a 38-year-old son of El Chapo, the Sinaloa cartel‘s co-founder alongside ...

Zambada has already shown he is willing to do that. In a jailhouse letter, Zambada gave a version of the killing of Hector Cuén - a political rival of Gov. Rocha who was killed the same day ...

Zambada didn’t realize US investigators had exploited a rift in the Sinaloa cartel, one official said, and that Guzmán López was in fact helping with Zambada’s capture.

Zambada, 76, was taken into custody after he arrived at a small airport near El Paso, along with Joaquín Guzmán López, a 38-year-old son of El Chapo, the Sinaloa cartel's co-founder alongside ...

Zambada founded the Sinaloa Cartel along with now-jailed drug lord Joaquin "El Chapo" Guzman, and he faces a litany of indictments for crimes relating to drug trafficking and organized crime in ...

Zambada was considered the Sinaloa cartel’s strategist and was thought to be more involved in its day-to-day operations than his better-known and flashier boss, “El Chapo,” who was sentenced ...