A white GMC Sierra rear-ended a big rig for unknown reasons.

Orinda Car Accident
One Person Sustains Serious Injuries in Car Accident on US 24 at Saint Stephens Drive in Orinda

, CA. – One person was seriously injured in a two-vehicle collision on Highway 24 in , Contra Costa County on Tuesday evening.

According to the California Highway Patrol, the crash was reported at around 5:25 p.m. on the westbound State Route 24 just east of Saint Stephens Drive.

A white GMC Sierra rear-ended a big rig for unknown reasons.

One person suffered severe injuries on the left arm and was taken to John Muir Hospital for treatment.

More details regarding the mishap were not provided.

An investigation is underway.