A man selling methamphetamine and cocaine from a food truck in Denver has been convicted of multiple drug charges in federal court.

Jorge Loya-Ramirez, 49, a citizen of Mexico, was convicted by a jury Tuesday after a seven-day trial in federal court, according to a news release from the acting U.S. attorney for Colorado. The jury deliberated for three hours before returning the guilty verdict on nine drug counts.

Loya-Ramirez was among 27 co-defendants indicted by a federal grand jury in June 2015.

He is the last of multiple defendants charged under an investigation dubbed Operation Black Rhino. Some defendants have had cases dismissed; other defendants pleaded guilty and have been sentenced or are awaiting sentencing. Loya-Ramirez’s sentencing date has not been set.

Some of the counts that Loya-Ramirez has been convicted of include conspiracy to distribute cocaine and methamphetamine, possession with intent to distribute methamphetamine, possession with intent to distribute cocaine, and use of a telephone during the commission of a drug offense.

Under the guise of selling tacos from a food truck, Loya-Ramirez was the boss of a large, illegal drug operation that imported and distributed about 200 pounds of meth in the Denver area, Fort Morgan, Greeley and southwest Kansas.

Loya-Ramirez faces a minimum 10-year prison sentence, with a possible life sentence.

The U.S. attorney’s office, FBI, Metro Gang Task Force and State Patrol took part in the complex investigation of the drug trafficking organization.