NORCO, Calif. -- A single-engine plane crashed on the grounds of a state prison in Norco on Monday, officials said.
There were no indications that prisoners or anyone on the ground was injured. Only a pilot was on board the plane, according to the FAA, and that person's condition was not immediately known.
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The Northrop N9M aircraft crashed just after noon at the California Rehabilitation Center on Fifth Street in Norco.
The crash triggered a fire and firefighters responded to extinguish the flames.
The Federal Aviation Administration and National Transportation Safety Board will investigate the crash.
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DEVELOPING: This story will be updated.