Cody Kinzie Dittmar, Fentanyl and Heroin Distribution, Iowa 2023

Convicted Felon Sentenced to Up to Life Imprisonment for Fentanyl and Heroin Distribution

A convicted federal felon who sold fentanyl and heroin resulting in two overdose deaths in Marion, Iowa, has been convicted by a jury. Cody Kinzie Dittmar, 34, originally from Dubuque, Iowa, but living in Cedar Rapids at the time of the crimes, was found guilty of distributing and conspiring to distribute heroin and fentanyl. The verdict was returned on June 25, 2025, following two hours of jury deliberations.

Court records show that Dittmar was sentenced to 64 months in federal prison for a 2017 conviction for being a felon in possession of a firearm. The evidence at trial revealed that Dittmar was released to federal supervised release in June 2023 and immediately began selling heroin and fentanyl with his girlfriend, Alysha (Gould) Dittmar.

On July 1, 2023, the Dittmars sold a mixture of heroin, fentanyl, and xylazine to a customer in Marion, Iowa. The customer and his wife used the drugs shortly thereafter, resulting in both deaths due to overdoses. The Dittmars continued to sell heroin and fentanyl in the Cedar Rapids area until July 2024.

Alysha Dittmar previously pled guilty to distribution of heroin and fentanyl resulting in the two deaths. Sentencing before United States District Court Chief Judge C.J. Williams will be set after a presentence report is prepared. Dittmar remains in custody of the United States Marshal pending sentencing.

Dittmar faces a mandatory minimum sentence of 20 years’ imprisonment on each count and a possible maximum sentence of life imprisonment, $2,000,000 in fines, and a lifetime of supervised release following any imprisonment.

The case was investigated by the Marion Police Department and the Drug Enforcement Administration (DEA) Task Force consisting of the DEA, the Linn County Sheriff’s Office, the Cedar Rapids Police Department, the Marion Police Department, and the Iowa Division of Narcotics Enforcement. The case is being prosecuted by Assistant United States Attorneys Nicole Nagin and Dan Chatham.

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