Sheriff’s officials in Pottawattamie County report four people were hurt in separate motorcycle accidents, Sunday. The Omaha World-Herald says the crashes occurred near Walnut, Underwood and Crescent. None involved another vehicle. Sunday afternoon near Walnut, the male driver of a motorcycle took an S-curve too fast near 510th Street and Sumac. The cycle rolled into a ditch. The driver and his passenger, who were not wearing helmets, suffered head injuries and were transported by ambulance to the Cass County Memorial Hospital in Atlantic, before being flown by helicopter to the University of Nebraska Medical Center in Omaha. Their injuries were not considered life-threatening at the time of the accident.