Joaquin Guzman Loera, also known as “El Chapo”—as one of the heads of the Sinaloa Cartel in Mexico, pleaded guilty today in U.S. District Court in Chicago to federal drug charges.

It’s expected that Ovidio Guzmán López’s guilty plea agreement will pave the way to further federal prosecution of Sinaloa Cartel members.

Sinaloa Cartel leader Ovidio Guzmán López pleaded guilty to drug trafficking charges in a U.S. federal court in Chicago on Friday.