Mexican President Andrés Manuel López Obrador has blamed the United States in part for the surge in cartel violence ...

The violence, linked to the arrest of cartel leaders, has prompted school closures and security alerts in the affected areas.

Mexican federal forces have arrested "El Piyi" alleged security chief for the "Los Chapitos" faction of the Sinaloa Cartel.

Two warring factions of the Sinaloa cartel appear to be fighting for power since two of its leaders were arrested in the U.S.

"El Piyi" is the security chief of Archivaldo Iván Guzmán Salazar, son of "El Chapo" and believed to be leading the criminal group at the moment ...

"Yes, of course... for having carried out this operation," the president said when asked if the American government was ...

By Alan Feuer The decision by the Justice Department will put Ismael Zambada García in the same federal courthouse where his fellow Sinaloa cartel founder, El Chapo, was sentenced to life in prison.

More than 30 people have been reported dead in a week of bloodshed in Sinaloa, although authorities did not specify how many were believed to be linked to the cartel infighting. Zambada ...

Sept. 13 (UPI) --Ismael "El Mayo" Zambada Garcia, the reputed co-founder of the feared Mexican Sinaloa cartel, has been arraigned on 17 drug trafficking, firearms and related charges in New York ...

Reputed Sinaloa drug cartel co-founder Ismael "El Mayo" Zambada made his first court appearance in New York federal court after an El Paso judge approved a motion to have him tried there before El ...

“El Mayo, the co-founder and leader of the Sinaloa Cartel, has been charged with overseeing a multi-billion-dollar conspiracy to flood American communities with narcotics, including deadly ...

Ismael “El Mayo” Zambada, the powerful longtime leader of Mexico’s Sinaloa drug cartel, pleaded not guilty Friday in New York on a 17-count indictment accusing him of narcotics trafficking ...