Published: Aug 20, 2011 11:00 PM EDT

NORTH NAPLES, Fla. - Collier County deputies are investigating an afternoon armed robbery.
    
It happened at a GNC store on Airport Pulling Road just befoRE 4pm Saturday afternoon.
     
Witnesses say a man showed a gun and demanded money.  He got away on foot with an unknown amount of cash.  Deputies described the suspect as a white male in his late 20's... wearing a black shirt, black shorts and black baseball cap.

Anyone with information is asked to call Crime Stoppers at 800-780-TIPS.