Indictment Unsealed Charging Madison Man with Trafficking Methamphetamine and Fentanyl

MADISON, WIS. – Timothy M. O’Shea, United States Attorney for the Western District of Wisconsin, announced the unsealing of an indictment charging Jonathan E. Conley, 43, Madison, Wisconsin, with distributing methamphetamine and fentanyl, and possessing methamphetamine and fentanyl for distribution.

The indictment alleges that on October 24, 2023, Conley distributed fentanyl and more than 50 grams of methamphetamine. The indictment further alleges that on February 7, 2024, Conley possessed more than 50 grams of methamphetamine and more than 40 grams of fentanyl, both for distribution. The indictment was returned by a federal grand jury sitting in Madison, Wisconsin, on April 2, 2025.

Conley was arrested yesterday in Dane County, Wisconsin and made his initial appearance in federal court today. He was detained pending a detention hearing on Friday May 9.

If convicted of the charges involving 50 grams or more of methamphetamine or 40 grams or more of fentanyl, Conley faces a mandatory minimum sentence of 5 years in prison and a maximum penalty of 40 years in prison. If convicted of the other charge, Conley faces a maximum penalty of 20 years in prison.

The charges against him are the result of an investigation conducted by the Drug Enforcement Administration, Wisconsin Department of Justice Division of Criminal Investigation, New Lisbon Police Department, and Wisconsin State Patrol. Assistant U.S. Attorney Steven P. Anderson is handling the case.

You are advised that a charge is merely an accusation and that a defendant is presumed innocent until and unless proven guilty.