Jeffrey Dwayne Gillom, 59, was shot in the 2400 block of Hickman Road in Des Moines on a Sunday evening in spring 2022. Both he and a woman were struck; Gillom was taken to a nearby hospital and died of his wounds on April 4, 2022. The female victim survived with serious injuries.

The initial investigation produced no immediate arrests. Detectives later identified and arrested a suspect, Tyrone Cameron, 30, who was charged in Polk County with Gillom’s murder and tried by a jury. That jury acquitted Cameron of the murder charge. Separately, federal prosecutors used the same facts to bring a firearm offense against Cameron; a federal jury convicted him on that count.

What details about the shooting or its investigation might help explain how a state murder trial and a federal firearms conviction produced different outcomes?