A crash reported along Highway 101 southbound in Arroyo Grande was blocking lanes Thursday morning.
According to the California Highway Patrol incident page, the crash happened just after 5:45 a.m. near the Halcyon Road off-ramp.
CHP says two vehicles and a semi-truck was involved. CHP reports that firefighters also responded to the scene to perform extracations.
Officials with Five Cities Fire Authority say one of the drivers involved had to be extricated from the vehicle and transported to an area hospital, but details on injuries are not available at this time.
CHP is still searching for the driver who may have caused the collision.