On 4-19-2024 approximately 9:10pm calls came in for a vehicle vs pedestrian at Lone Tree way and O’hara Ave. Information provided was vehicle was driving at a high rate of speed and struck the pedestrian. It is unknown at the pedestrian was in the marked crosswalk at the time of the collision. The pedestrian is in critical condition and was airlifted to John Muir Medical Center in Walnut Creek. It is unknown if alcohol was a factor in the collision.