A Michigan man will spend the better part of the next century behind bars after a judge handed down a maximum 80-year sentence for the “senseless” killing of a delivery driver. Terrell Simms, 39, learned his fate on January 27, nearly a year after a road-rage encounter turned into a fatal shooting on a suburban Detroit bridge.
The tragedy unfolded on the night of March 9, 2025. Mamadou Diallo, a 26-year-old who had recently moved to Michigan from Senegal, was just trying to finish his shift. He had just picked up a White Castle order and was navigating through the suburbs south of Detroit when his Ford Escape was clipped by a speeding GMC truck.
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Investigators say the truck, driven by Simms, didn’t just speed off. Instead, the driver allegedly slowed down, waiting for Diallo to catch up before unleashing a hail of gunfire. Six shots were fired into Diallo’s car; one hit him squarely in the chest.
Police initially responded to reports of shots fired, only to find a much more grim scene minutes later. Diallo had managed to pull his car over on a bridge but collapsed shortly after exiting the vehicle.
Although first responders rushed him to a nearby hospital, he was pronounced dead shortly after arrival. The investigation took a month of tracking leads before authorities arrested Simms, while two other individuals initially detained were ultimately released without charges.
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In court, the prosecution painted a picture of a routine night made fatal by a moment of inexplicable aggression. Diallo was described by Ferndale Police Chief Dennis Emmi as an innocent man simply working to make ends meet. Having moved to the U.S. only two years prior, Diallo’s death sent shockwaves through both the local community and the delivery-driver workforce.
Following a trial in October 2025, a jury found Simms guilty on a slew of charges, including second-degree murder and being a felon in possession of a firearm.
The judge’s sentence of 37.5 to 80 years ensures that Simms will be well into his 70s before he is even eligible for parole. It’s a heavy conclusion to a case that started with a simple lane change and ended with a life cut short over a delivery that never arrived.
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