Injuries were reported in a crash on Highway 41 between Morro Bay and Atascadero Friday morning.
It happened at about 7:46 a.m. near Cerro Alto Road and involved two vehicles, according to the California Highway Patrol.
Traffic was reportedly at a standstill just five minutes later.
A KSBY viewer reported people were turning around shortly after 8 a.m. due to the traffic. An ambulance had also just arrived on scene.
This is a developing story and will be updated as information becomes available.