DES MOINES, Iowa —

Des Moines police are investigating a crash that killed a pedestrian on Highway 5.

It happened around 3:30 a.m. on Highway 5 at SW 9th Street, according to a news release from the Des Moines Police Department. Emergency responders arrived to find an adult male pedestrian dead on the scene.

Authorities didn't describe the circumstances of the crash, but said the adult male driver of the vehicle involved was not injured.

Westbound traffic was diverted off the highway for several hours while investigators were on the scene.

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According to the latest data from the Iowa Department of Transportation , 203 people have died so far this year on Iowa roads.

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