The rider was taken to Riverside Community Hospital for treatment.

Riverside, CA. – One person was injured in a motorcycle accident on Tuesday morning in Riverside.
At around 5 a.m., the California Highway Patrol responded to reports of a collision on the 91 Freeway near Highway 71.
A motorcycle reportedly collided with a pickup truck in unclear circumstances.
The rider was found unresponsive at the scene and was taken to Riverside Community Hospital for treatment.
Additional information about the accident was not provided.
An investigation is ongoing.
