According to the California Highway Patrol, three vehicles collided for reasons still under investigation.

Santa Clarita, CA. – Police are investigating a multi-vehicle accident that left a female driver with minor injuries on Wednesday night in Santa Clarita.
The accident happened at around 7:20 p.m. on northbound Highway 14, just south of Newhall Avenue.
According to the California Highway Patrol, three vehicles collided for reasons still under investigation.
Emergency crews and medics rushed to the crash site to aid a female driver injured in the crash.
The vehicles were blocking the middle lanes following the accident.
Further details regarding this incident were not released.
The accident remains under investigation.