Police suspect a driver who got on the wrong ramp at U.S. 131 and Stadium Drive caused Friday's deadly crash, resulting in the death of three people.

Two people, 59-year-old Mark Witsaman of Portage and 88-year-old Elma Witsaman, were killed as they entered northbound U.S. 131 from the southbound lanes in their car, according to a Kalamazoo County Sheriff's Department news release.

Their vehicle crashed into a pick-up truck, with 57-year-old Victoria Mitchell, 56-year-old William Mitchell and 20-year-old Brent Mitchell inside. Victoria Mitchell died at the scene; the two others were taken to an area hospital with critical injuries.

Authorities identified the victims Saturday, March. 4

Police say they do not know why the driver of the car, Mark Witsaman, entered the highway going the wrong way.

The crash remains under investigation.

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