A 5-day-old baby boy died Sunday after a pickup tractor he was riding in was struck by a tractor trailer on Interstate 80 in Ohio, the state Department of Public Safety said.
State police said the boy was hit at about 3:15 p.m. by a Chevrolet pickup truck.
He was taken to a local hospital, where he was pronounced dead.
The truck had been driven on a shoulder lane, troopers said.
No other injuries were reported.
The incident is under investigation by the Ohio State Highway Patrol.