<p>Des Moines Register 05-08-06</p><p>Dateline Iowa</p><p>REGISTER STAFF AND NEWS SERVICES</p><p>Patrol officer injured in motorcycle crash A 23-year-old Iowa State University public safety patrol officer was critically injured in a motorcycle accident Saturday in Ames.</p><p>Ames police said Derek Doebel crashed his motorcycle at 30th Street and Grand Avenue at about 7 p.m. Saturday.</p><p>ISU student dies in 4-vehicle crash A 23-year-old Iowa State University senior died in a four-vehicle collision in Benton County on Friday, one day before the university's commencement.</p><p>The Benton County sheriff's office reported that Michelle Pinkston of Cedar Rapids died shortly after noon in the accident on U.S. Highway 30 near 30th Avenue in Benton County.</p><p>Pinkston was eastbound in a 1998 Chevrolet Prizm when the car crossed the median and entered the westbound lanes. Her car was struck by a Ford truck driven by Dennis Hamilton of Norway before continuing on and striking a minivan driven by Deborah Nielsen of Newhall. Pinkston's and Nielsen's vehicles were then struck by a tractor-trailer driven by Ambrose Kearney of Garwin.</p><p>Pinkston was pronounced dead at the scene. Nielsen was taken to a hospital with serious injuries.</p><p>The sheriff's office continues to investigate the accident.</p>