(KOH) –  The Sparks Police Department is investigating a rollover crash that happened early yesterday near El Rancho and Prater. At about 5am, police say the suspect vehicle was traveling at a high rate of speed northbound on Kietzke approaching Prater and ran off the road into a local car dealership, where the vehicle rolled onto its side. Numerous cars were damaged, and alcohol and speed were determined to be factors. The 15-year-old driver and 16-year-old passenger were both treated for minor injuries. The driver was arrested for DUI and and Driving without a license. If you have information, please call SPD at 353-2231.