Two were injured after a crash on Interstate 80 Tuesday.
According to an State Patrol report, a Fedex ground tractor and double trailers were eastbound on the highway when the driver lost control and the semi-truck entered the ditch and struck several trees.
The driver and co-drivers were transported to the University of Iowa Hospitals and Clinics; the names are being withheld until the families have been notified.
According to the report, the accident remains under investigation.