Anthony Kenneth Johnson, a 68-year-old resident of Merced, California, has been sentenced to 55 months in federal prison for distributing methamphetamine hydrochloride. The sentencing took place on September 17, 2025, in the District Court of Guam. In addition to the prison term, Johnson will serve three years of supervised release after his imprisonment. He was also ordered to forfeit $1,000 in drug proceeds and pay a mandatory $100 special assessment fee. Individuals convicted of federal drug offenses may lose eligibility for certain federal benefits.
The case began when United States Postal Inspectors intercepted a package containing 23.09 grams of methamphetamine on August 17, 2017. After delivering the package under surveillance, authorities identified Kevin Mayberry as the recipient; Mayberry admitted to receiving the drugs and named Johnson as the sender. At that time, Johnson was already on supervised release following a previous conviction related to methamphetamine conspiracy for which he served over 20 years.
In March and April 2020, after his supervised release had been revoked for 20 months, Johnson sent two additional packages containing methamphetamine to Mayberry. The first package contained nearly eight grams and was exchanged for $250; postal inspectors confirmed this by sending a money order that Johnson later cashed. The second package contained more than 25 grams of methamphetamine with an agreed payment of $1,000—Johnson referred to it as “zip,” meaning an ounce of methamphetamine. Inspectors sent two money orders totaling $750 that were also cashed by Johnson. Overall, authorities determined that Johnson distributed more than 56 grams of high-purity methamphetamine.
Kevin Mayberry previously pleaded guilty to attempted possession with intent to distribute methamphetamine hydrochloride and received a sentence of over nine years in federal prison.
“Drug trafficking by offenders under post-conviction supervision will not be tolerated, regardless of the quantity involved,” stated United States Attorney Anderson. “This investigation is another example of the benefits of multi-agency partners working together to keep our communities safe.”
“This sentence sends a message that the U.S. Postal Inspection Service will not allow the U.S. Mail to be used to distribute harmful narcotics in Guam or anywhere else.” said U.S. Postal Inspection Service San Francisco Division Inspector in Charge Stephen Sherwood. “I would like to thank our partners on the task force including the Guam Customs and Quarantine Agency, the Guam Police Department, and the Guam Army National Guard Counterdrug Program for their valuable work keeping dangerous substances out of the mail and out of the community.”
The investigation was led by United States Postal Inspection Service and Guam Police Department with prosecution by Assistant United States Attorney Devarup Rastogi.
