The CHP believes an off-duty Redding Police officer had been drinking before a high-speed rollover crash on Keswick Dam Road Saturday afternoon. 44-year-old Matt Stoker was driving alone westbound about a mile from Lake Boulevard when he rounded a curve too fast. The 2007 Chevy pickup truck’s right wheels left the pavement on the right side before the truck shot across the road and overturned. Stoker apparently wasn't wearing a seatbelt and was ejected. The truck landed on top of him and he had to be extricated by Redding Fire personnel before being transported to Mercy Hospital with what were described as moderate-to-major injuries. CHP Sergeant Ron Farris says Stoker had left an event minutes earlier and alcohol was likely a factor in the crash. Stoker was arrested for driving under the influence of alcohol, and released to the hospital to be treated for his injuries.