The Treviño Morales, leaders of Los Zetas, pleaded not guilty to drug trafficking charges as they potentially face the death penalty in the U.S.

From elite soldiers to the architects of mass terror—Los Zetas redefined cartel warfare. This is the brutal rise and chaotic fall of the most feared syndicate Mexico has ever known.

The investigation revealed details about three homicides ordered by the Zetas, overseen by Sanchez and carried out by members of the Hermandad Pistoleros Latinos prison gang, the detective said.

AUSTIN — During three weeks of testimony in the trial here of five people accused of laundering money from the Zetas drug cartel, jurors never heard from the one man whose name popped up in ...