Before dawn, an elementary school principal in the capital of Mexico's Sinaloa state checks various chats on his phone for ...

Convoys of military vehicles are now a common sight in the Mexican city of Culiacan, following the arrest of Sinaloa cartel ...

Between 200,000 to half a million U.S. firearms are smuggled into Mexico every year, "60 Minutes" reported last December.

Federal Attorney General Alejandro Gertz Manero told reporters Tuesday that Ismael "El Mayo" Zambada has asked Mexico for ...

"Mr. Zambada doesn't want to go to trial and is willing to accept responsibility for a charge that doesn't carry out the ...

Mexican Attorney General Alejandro Gertz said Tuesday that the U.S. government has not yet responded to Mexico's request to ...

Accused Mexican drug kingpin Ismael "El Mayo" Zambada is willing to take a plea deal if it means prosecutors do not seek the ...

Accused Mexican drug kingpin Ismael "El Mayo" Zambada is willing to plead guilty in a deal with prosecutors in the United ...

The violence in Sinaloa followed the surprise arrest on U.S. soil of cartel co-founder Ismael "El Mayo" Zambada in late July, which is believed to have unleashed an internal power struggle.

The violence in Sinaloa follows the surprise arrest on US soil of cartel co-founder Ismael "El Mayo" Zambada in late July, which is believed to have unleashed an internal power struggle.

Sinaloa Cartel co-founders — from left to right, Joaquín “El Chapo” Guzmán Loera and Ismael “El Mayo” Zambada — are both in U.S. custody, but their criminal organization continues to ...

Mexican intelligence sources allege he is a key figure in Los Chapitos and that he played a role in the sting operation which led to the arrest of another cartel kingpin "El Mayo Zambada" in the US.