Ismael Zambada, 77, pleaded guilty to US drug trafficking charges, admitting he flooded the US with cocaine and heroin—set for life in prison.
Joaquin Guzman Lopez, son of El Chapo, changed his plea to guilty in Chicago, admitting to drug trafficking and criminal enterprise. His brother Ovidio also pleaded guilty earlier. The arrests have intensified cartel infighting, causing violence and highlighting US-Mexico drug trafficking tensions.