Convicted federal felon Cody Kinzie Dittmar, 34, of Dubuque, Iowa, who sold fentanyl and heroin resulting in two overdose deaths in Marion, Iowa, in 2023, was convicted by a jury on June 25, 2025, after a three-day trial in federal court in Cedar Rapids.
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 showed that Dittmar was released to federal supervised release on that conviction in June 2023. He immediately began selling heroin and fentanyl with his girlfriend, then wife, 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. Both then died of 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. 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, and is being prosecuted by Assistant United States Attorneys Nicole Nagin and Dan Chatham.
Dittmar remains in custody of the United States Marshal pending sentencing. Sentencing before United States District Court Chief Judge C.J. Williams will be set after a presentence report is prepared.
For more information on the case file, visit https://ecf.iand.uscourts.gov/cgi-bin/login.pl. The case file number is 25-CR-00001-CJW-MAR. Follow us on X @USAO_NDIA for updates on this and other federal crime cases.
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Key Facts
- State: Iowa
- Agency: DOJ USAO
- Category: Drug Trafficking|Fraud & Financial Crimes|Violent Crime|Sex Crimes|Cybercrime|Public Corruption|Weapons|Human Trafficking|White Collar Crime|Organized Crime
- Source: Official Source ↗
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