By CBS13 Staff

COPPEROPOLIS (CBS13) — A motorcycle rider was killed after speeding past a California Highway Patrol officer and crashing off Highway 4 late Wednesday afternoon.

The officer reported seeing the motorcyclist speed by a little before 6 p.m. along eastbound Highway 4 near Horseshoe Road, CHP says. The officer made a u-turn to try and go after the rider, but lost sight of the motorcycle.

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A little bit down the road, the officer then noticed a cloud of dust near a curve. The officer then discovered that the motorcyclist had gone off the road and crashed.

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The rider was killed in the crash, CHP says. His name has not been released, but authorities say he was a 47-year-old Turlock resident.

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Neither drugs nor alcohol appear to have been factors in the crash, investigators say.