A Denison woman was killed in a motorcycle accident on Saturday night.

According to the Iowa State Patrol accident report, 59-year-old Craig Promes of Denison was headed north on Highway 39, driving a 2020 Can-Am Spyder and for unknown reasons made a sharp turn, and the passenger, 52-year-old Julie Promes of Denison fell off the motorcycle and sustained fatal injuries.

The accident remains under investigation.

(By Tanner Bickford, KDSN, Denison)

Radio Iowa