A Madison man, Gregory P. Robinson, has been convicted of distributing cocaine, heroin, and fentanyl, possessing these drugs for distribution, and maintaining a drug-involved premises. The conviction followed a three-day trial in federal court in Madison. The jury delivered the verdict after just over two hours of deliberation.
Chadwick M. Elgersma, Acting U.S. Attorney for the Western District of Wisconsin, announced the guilty verdict. Evidence presented at the trial showed that Robinson sold controlled substances to an undercover police officer on four occasions in June 2024. These transactions included cocaine on June 3; cocaine and fentanyl on June 6; and cocaine, fentanyl, and heroin on June 13 and June 20.
On June 25, 2024, law enforcement executed a search warrant at Robinson’s hotel room. Officers found over 500 grams of cocaine and heroin along with more than 40 grams of fentanyl. They also discovered drug packaging materials, ingredients to manufacture crack cocaine, a money counter, and U.S. currency.
A witness from the Wisconsin State Crime Laboratory confirmed the chemical composition of the drugs found. A Drug Enforcement Administration witness testified that the quantities indicated intent to distribute rather than personal use.
Chief U.S. District Judge James D. Peterson scheduled sentencing for October 2, 2025. Robinson could face up to 20 years in federal prison for each charge related to drug distribution and maintaining a drug-involved premises charge. He faces a mandatory minimum penalty of five years in prison and up to forty years for each possession with intent charge.
The investigation was conducted by the Madison Police Department, Dane County Narcotics Task Force, Drug Enforcement Administration with assistance from ATF Madison Crime Gun Task Force comprised of agents from local and state agencies throughout Western District of Wisconsin. Assistant U.S. Attorneys Colleen Lennon and William M. Levins are handling prosecution.


