A Phoenix motorcyclist died early Sunday in a crash on the I-17 southbound off-ramp to Carefree Highway, the Arizona Department of Public Safety said.
The victim is identified as 21-year-old Christopher Frank Dawson.
A driver saw the wrecked motorcycle at the off-ramp and noticed a motionless body in the gravel.
Officers said they believe Dawson was going too fast and his motorcycle left the ramp and struck a highway sign.
The accident remains under investigation.
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