Youngstown police are investigating a crash that happened early Thursday on Interstate 680 northbound in Youngstown.
It happened about 3:30 a.m. near the Mahoning Avenue exit.
When police got there, they found a car that had crashed into a concrete barrier and the driver was gone.
Crews temporarily shut down the ramp and a portion of I-680 so they could remove the car. The highway has since reopened.