CULIACÁN, Sinaloa — Before dawn, an elementary school principal in the capital of Mexico's Sinaloa state checks various chats ...

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

Border Patrol agents near Tucson arrest three alleged traffickers and a foot guide linked to the Los Memos criminal organization.

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

It’s Mexico’s Sinaloa cartel that's the biggest supplier of cocaine and ‘ice’ to the voracious Australian illegal drug market. The cartel’s dominance of the Australian market was driven by its founder ...