A Denison, Iowa, woman was killed when a semi rear-ended a car on Highway 218.

According to the Iowa State Patrol, a truck driven by Brandon Bachman, 34, and a Ford Taurus driven by Kevin Nau, 50, both of Mount Pleasant, Iowa, were driving north on Highway 218 at mile marker 89 when the truck struck the car.

Both vehicles entered the ditch, police reports show.

A passenger in the Nau vehicle, Misty Underwood, 29, died at the scene.

Nau and Michelle Nau, 38, were injured and taken to University of Iowa Hospitals and Clinics by ambulance. Information on their conditions was not released.

The truck driver was not injured.

The accident remains under investigation.

— by Regina Zilbermints