It happened after 8 Wednesday night in the area of Vineland and Sunset -- that's near Kearney Boulevard.
Police say they found a vehicle pulled over with a man inside suffering from a gunshot wound.
Officers and sheriff's deputies provided medical aid until paramedics arrived and rushed the victim to the hospital.
At the last report, he was listed in critical condition.
Deputies say there were other people in the vehicle.
Investigators are speaking with them to try and figure out what happened.
So far, there is no suspect description or motive released for the shooting.