By Christopher Baker

GRASS VALLEY (CBS13) — A dirtbike rider is suffering from major head trauma after losing control of their bike and being ejected in Nevada County.

According to a news release from the California Highway Patrol, on May 22, at roughly 7:40 p.m., CHP – Grass Valley responded to a call of a dirt bike rider down on the roadway on Pleasant Valley Road, south of Becker Road.

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Hunter Armstrong was riding a 2012 Suzuki DRZ400 dirt bike south on Pleasant Valley Road when for an unknown reason, he lost control of his bike.

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Armstrong was ejected onto the roadway surface and was later flown to Sutter Roseville Medical Center. He was not wearing a helmet.

The collision remains under investigation.

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