Man Who Mailed Fentanyl from Arizona to Iowa Sentenced to Over Seven Years in Federal Prison

A man who mailed fentanyl powder, pills containing fentanyl, and “ice” methamphetamine from Arizona to Dubuque, Iowa, was sentenced today to 87 months in federal prison for his involvement in a conspiracy to distribute controlled substances.

Shawn Javier Lopez-Johnson, age 29, from Phoenix, Arizona, received the prison term after a November 1, 2024 guilty plea to one count of conspiracy to distribute a controlled substance.         

From March 2023 through December 2023, Lopez-Johnson mailed re‑distribution quantities of controlled substances, including hundreds of fentanyl pills, from Arizona, to Dubuque, Iowa, to his co-conspirator, Alexander John Chapman who was previously sentenced for his role in the conspiracy.  During this time, Lopez-Johnson mailed Chapman approximately $5,400 worth of fentanyl powder, pills containing fentanyl, and methamphetamine.

Lopez-Johnson was sentenced in Cedar Rapids by United States District Court Chief Judge C.J. Williams.  Lopez-Johnson was sentenced to 87 months’ imprisonment.  He must also serve a three-year term of supervised release after the prison term.  There is no parole in the federal system.  Lopez-Johnson is being held in the United States Marshal’s custody until she can be transported to a federal prison.

The case was prosecuted by Assistant United States Attorney Nicole L. Nagin, and it was investigated by the Dubuque Drug Task Force and the United States Postal Inspection Service, at https://ecf.iand.uscourts.gov/cgi-bin/login.pl.  The case file number is 24-CR-01003.

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