Suspected boulders thrown from highway overpass cause injury accident along I-75

FLINT, Mich. (WJRT) - Reports of suspected boulders being thrown from a Genesee County overpass led emergency crews to shut down parts of I-75 in Vienna Township Wednesday evening.

Crews began rerouting southbound traffic soon after reports of a serious accident, forcing drivers to exit the highway at M-57 near Clio.

According to Genesee County dispatchers, the incident caused some type of injury accident around 8:30 p.m. The freeway was shutdown a short time later.

A Michigan State Police helicopter could be seen and heard circling the area with search lights well into the night. A K-9 team was also on the ground searching for someone as well.

As of midnight, investigators were still working the scene and not ready to confirm exact details of just what happened and how serious the injuries are.

An accident reconstruction team was at the scene.

Mt. Morris Police told ABC 12 that it appears an unknown suspect was throwing boulders from an overpass and struck a vehicle below.

Michigan State Police shut down the overpass on Dodge Road and were actively searching for the suspect on Wednesday evening.

Sean Dungey,one of our ABC12 Facebook followers says, "Came through in my gas tanker as PD was arriving. The concrete chunks were huge and a lot of them. A lot of cars damaged and stopped." In another comment, he went onto say, "...they were huge and I'd say a couple were at least 2 ft in diameter."