On Sunday, a motorcycle that was headed south on US 89 near Afton when the driver failed to negotiate a curve to the left. It then exited the right side of the roadway and collided with a guardrail. The collision caused the driver to be thrown from the motorcycle and down a steep embankment.
The driver of the motorcycle was identified as 63-year-old Montpelier, Idaho resident Walter A. Castillo. He was not wearing a helmet and died at the crash scene.
Alcohol use is being investigated as a possible contributing factor.
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