The National Association for Stock Car Auto Racing (NASCAR) has suspended driver Shane Hmiel indefinitely, for violation of the sanctioning body's substance abuse policy.

NASCAR officials said Thursday that Hmiel was tested for banned substances after NASCAR Busch Series qualifying at Lowe's Motor Speedway in Concord, N.C. The results of the test were positive, violating Section 12-4-A (actions detrimental to stock car racing) and Section 12-4-E (violation of the NASCAR Substance Abuse Policy) of the 2005 NASCAR rule book.

Hmiel is 14th in the current NASCAR Busch Series driver championship standings.