Jonathan Tyler Gauthier has been sentenced to 30 years in federal prison for distributing fentanyl, which resulted in two fatal overdoses. The sentencing took place in San Diego’s federal court.
The government’s sentencing memorandum revealed that Gauthier sold the fentanyl responsible for the deaths of Sam Guest, aged 24, in September 2022, and Jesse White, aged 27, in December 2022. Despite these incidents, Gauthier continued selling fentanyl. In February 2025, he pleaded guilty and admitted his actions led to their deaths.
U.S. District Judge Janis L. Sammartino described the case as “one of the most tragic” she had encountered. U.S. Attorney Adam Gordon emphasized the sentence as a warning against those dealing fentanyl: “This 30-year sentence sends a stark message: If you deal fentanyl and show no regard for the deadly consequences, you will be held fully accountable.”
Shawn Gibson from Homeland Security Investigations noted the serious repercussions for those distributing fentanyl: “HSI remains fully committed to holding these individuals accountable.” DEA Acting Special Agent Jacob Galvan reiterated that dealing such drugs is not victimless: “Two lives were lost… by one man’s choice to exploit vulnerabilities.”
Sam’s mother recalled her son as kind-hearted and full of joy. Jesse’s family remembered him as someone with a heart of gold who loved college football and history.
Gauthier’s actions were deemed reckless by authorities due to his awareness of fentanyl’s dangers yet continuing sales after fatalities occurred. He even acknowledged the potency of certain batches via text messages.
Despite prior convictions for robbery and narcotics offenses, including an incident weeks after Sam’s death where he was caught selling methamphetamine in Las Vegas, Gauthier persisted with drug dealings.
Assistant U.S. Attorney David Fawcett prosecuted this case with investigations led by special agents from various law enforcement agencies including DEA’s Overdose Response Team and Fentanyl Abatement and Suppression Team (FAST).
The collaborative efforts aim to address dangerous drug distribution resulting in overdose deaths within San Diego County through multi-agency task forces like HSI San Diego FAST established in August 2022 targeting smuggling networks.
