Officials with the Reno Police Department say the driver involved in the hit and run that left a pedestrian critically injured Saturday night has turned himself in. Police say 26-year-old Brian Pippen of California surrendered himself Sunday. Police say it's believed alcohol and marijuana were factors in the crash. Pippen has been charged with Felony hit and run, Failure to yield the right of way to a pedestrian, and Driving without a valid driver's license. The victim remains in critical condition with life threatening injuries. That person's identity has not been released.