Michigan semi stop uncovers 368 pounds of suspected heroin, 174 handguns

What Michigan State Police found inside the commercial vehicle turned an I-69 stop into a major investigation.

Michigan State Police recovered 174 handguns with obliterated serial numbers and approximately 368 pounds of suspected heroin during an I-69 semi-truck stop near Marshall. (Photo: Michigan State Police)

Michigan State Police Motor Carrier Officers stopped a semi-truck Thursday on Interstate 69 near Marshall, Michigan. The commercial vehicle stop happened around 2 p.m. on Sept. 24. Troopers soon discovered far more than a typical roadside inspection. Inside the truck, authorities found hundreds of pounds of suspected heroin and 174 handguns.

Police reported finding 92 bundles containing approximately 167 kilograms of suspected heroin. That equals roughly 368 pounds of narcotics. Officers also recovered 174 handguns from the commercial vehicle. Authorities reported that the firearms had obliterated serial numbers.

Driver arrested after I-69 discovery

Officers arrested the male semi driver following the discovery. Michigan State Police cited drug and weapons-related violations connected to the arrest. Authorities have not publicly identified the motorist. The investigation remains active as officials prepare for an expected prosecution.

The seizure occurred near Marshall in Calhoun County, about 45 miles southeast of Grand Rapids. Interstate 69 provides a major commercial route through southern Michigan. The highway connects the region with Indiana before continuing toward the Canadian border. Commercial trucks regularly use the corridor for regional and cross-border freight movements.

Investigation remains active

Michigan State Police provided FreightWaves with its original announcement and authorized use of the agency’s seizure photo. Investigators declined to release further details because the case remains sensitive. The agency cited concerns about compromising the investigation or expected prosecution. Officials also want to protect the safety of potential witnesses.

MSP has not released additional information about the driver, commercial vehicle or circumstances surrounding the stop. Authorities continue investigating the narcotics and weapons seizure. FreightWaves will update this story if additional details become available.

Why it matters

The discovery shows why commercial vehicle enforcement extends beyond equipment and safety violations. A single truck stop uncovered suspected heroin and 174 handguns with obliterated serial numbers.

Click here for more articles on cargo theft and freight fraud by Phil Brink.

FBI’s Memphis Cargo Theft Task Force warns cyber schemes put millions in freight at risk – FreightWaves

Federal indictments target nearly $600K in interstate cargo theft tied to Memphis – FreightWaves

Masked thieves cut trailer hinges, steal Black Angus beef in Philadelphia – FreightWaves

Phil Brink

Phil Brink is the Head of Fraud Media and Education at FreightWaves, where he investigates cargo theft, freight fraud and transportation security. He owned and operated a freight brokerage for more than a decade before organized fraud targeted his business, forcing him to rethink how freight companies identify and manage risk. The lessons he learned continue to shape his reporting, education and collaboration with brokers, carriers, shippers and law enforcement. He developed FreightWaves' Certified Fraud Compliance Officer (CFCO) program to give transportation professionals practical knowledge and a structured framework for identifying and managing fraud risk. Reach him at phil.brink@firecrown.com.