SIMI VALLEY (CBSLA.com) — A Simi Valley police officer remained hospitalized Thursday for treatment of serious injuries sustained in a traffic collision.

According to police, a motor officer was riding his motorcycle on Tapo Canyon Road, at Los Angeles Avenue, when a small pickup truck collided into the path of the motorcycle.

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The officer was thrown from his motorcycle, subsequently causing him to sustain injuries to his head, multiple fractures and internal injuries.

Paramedics transported the officer to a hospital where he underwent several hours of surgery.

At this time, he remains listed in serious condition.

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The driver of the truck did not sustain injuries in the crash, police said.

No citations or arrests have been made.

According to police, neither alcohol or drugs contributed to the collision.

The cause of the crash remains under investigation.

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Anyone who may have witnessed this collision has been urged to contact Moorpark’s CHP Office at (805) 553-0800.