One person injured Arnold fire

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ARNOLD, MO (KPLR) – Fire crews were called to a duplex in Arnold just before 9 pm Tuesday night on Key West Drive.  A Rock Community Fire District official says an elderly man was pulled from the fire after firefighters entered the duplex, and saw the man' arm in the smoke fill house.  The man was airlifted to a hospital in serious condition.

An adjoining unit suffered heavy smoke damage.

Fire investigators are on scene trying to determine the cause of the fire.