It happened at about 8 p.m. in the 21700 block of Highland Knolls Drive.
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The victim was rushed to the hospital, according to deputies.
A witness said they called 911 for help when a man got out of his car limping, claiming he had been shot.
He stopped on Highland Knolls, near Mason, but it's unclear where the shooting happened.
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When help did not come fast enough, the witness told ABC13 they flagged down a constable down the street.
A description of the shooter had not yet been released.
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