St Joseph police are investigating after at least four motorists reported their vehicles being hit by chunks of asphalt. The reports started coming in shortly after 4am Wednesday.

It was not immediately clear if the objects were thrown at the vehicles or fell on their own.

Deputies first responded to an area near the North Junction of I-29 and I-229, but soon there were reports as far south as I-29 and Pickett Road. Investigators zeroed in on a pile of concrete near the bridge over I-29 at Cook Road.

The St Joseph Police Department is now investigating.

No injuries are reported.