Jack Arthur Stumberg, 22 years old, from Grundy City, Iowa, was sentenced to prison following a guilty plea on 27 December 2019 for plotting and possessing LSD, MDMA and psilocybin mushrooms with purpose.
In August 2019, a two-count indictment filed accused Stumberg and a conspirator of trafficking MDMA, LSD, and Psilocybin. In addition to the scheme of sale, the indictment charged Stumberg with the intent to distribute possession of MDMA and LSD.
According to court records, a suspicious package sent to Stumberg 's residence was seized by postal inspectors with the United States Postal Inspection Service and one sent to his accomplice's home in March of 2019. Instead of waiting for a search warrant, police received probable cause after a hit on the packages by "qualified K-9." For both shipments, the postal inspectors found 15 cartridges of cannabis oil vapour.
Stumberg was convicted by US District Court Judge C.J. Williams in Cedar Rapids. Stumberg was sentenced to 78 months in prison. He also has to complete a supervised release period of five years following the jail sentence. The federal scheme does not include the parole. Stumberg is kept in US Marshal 's custody until he can be transferred to a federal jail.
The case was investigated by the U.S. Postal Service and the Office of Grundy County Sheriff and prosecuted by Prosecutor Dan Chatham, Assistant to the United States.