At least one person was injured in the accident and was taken to the hospital for treatment.

Rialto, CA. – Authorities are investigating a traffic collision on Monday evening in Rialto.
At around 4:33 p.m., California Highway Patrol responded to the scene of a car accident on the 210 Freeway near Alder Avenue.
Officers who responded to the incident located four vehicles at the accident scene. The events preceding the collision were not immediately determined.
At least one person was injured in the accident and was taken to the hospital for treatment.
More details about the accident were not released.
An investigation into the accident is ongoing.