Sigfrido Adolfo Rivero, 56, of Nogales, Arizona, was sentenced last week to 121 months in federal prison, after pleading guilty to Possession with Intent to Distribute Fentanyl.
Rivero’s sentence is to be followed by 120 months of supervised release.
On May 19, 2021, Rivero was arrested as he attempted to pass through the Interstate 19 immigration checkpoint near Amado, Arizona, after it was discovered that he had approximately 190,000 pills (19.24 kilograms) of fentanyl hidden in his vehicle. In a previous case, Rivero was sentenced to 10 years in state prison for trafficking bulk quantities of methamphetamine and cocaine. Rivero served most of that sentence before being released, and was on parole for about five months when he committed this new drug trafficking crime.