BRISTOL, Tenn. (AP) -- NASCAR has indefinitely suspended a Nationwide Series crew member for violating the substance abuse policy.

Ryan Hess was working with MacDonald Motorsports and driver Jason Bowles earlier this month at Watkins Glen as a mechanic and gas man.

NASCAR began random drug testing in 2009. Five drivers and 10 crewmen from each series are randomly selected for testing weekly, although the substance is not revealed in a positive test.

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