Cartel logistics boss gets nearly 19 years for moving cocaine and cash through trucking network

A cartel network involving truckers transported cash loads valued at $1 million or more back into Mexico, while its cocaine operation supplied cities such as Atlanta, Georgia, and Memphis, Tennessee. Weekly shipments reached up to 300 kilograms. Roberto Lopez, the logistics manager, including driver payments, received an 18-year, 10-month prison sentence on September 9, 2026, following his guilty plea to cocaine trafficking and money laundering conspiracies on May 19.

Another five years of supervised release followed his incarceration. Authorities apprehended him after hiding abroad for over a decade. Truckers Carlos Montemayor and enforcer Edgar Valdez-Villareal, known as “La Barbie,” partnered in a distribution network that served Sinaloa and Beltran-Leyva cartel leaders in the early 2000s.

Within six months, traffickers had distributed 1,500 kilograms of cocaine in Atlanta alone. U.S. Attorney Theodore S. Hertzberg referred to Lopez as the head of domestic transportation for those cartels, handling payments to stash house operators and overseeing cash repackaging before cross-border transfers. Federal investigators found southbound weapon shipments exceeded 1,000 rifles, ranging from 100 to 200 converted machine guns, along with hundreds of magazines and ammunition drums.

Additional equipment included silencers, night vision goggles, ballistic vests, helmets, and more. Lopez fled following disrupted operations, was arrested in Mexico City on June 27, 2024, and expelled from Mexico on August 12, 2025, using aliases such as “Shrek” and “NWA.” DEA agents led the investigation with assistance from federal marshals and DOJ’s Office of International Affairs.