Hurdler Dawn Harper-Nelson suspended for 3 months

COLORADO SPRINGS, Colo. (AP) Olympic hurdles gold medalist Dawn Harper-Nelson has been suspended for three months after testing positive for a banned substance.

The U.S. Anti-Doping Agency announced the sanction Tuesday.

USADA says the 32-year-old Harper-Nelson tested positive for the prohibited substance hydrochlorothiazide and related metabolites in an out-of-competition sample. She told USADA it was caused by blood pressure medication prescribed by a physician to treat hypertension.

In a statement posted on her Twitter account, Harper-Nelson said she has learned ''a valuable lesson and hope my mistake will serve as a reminder to all athletes to be diligent in thoroughly checking any and all prescribed medications.''

Her period of ineligibility started Dec. 1.

Harper-Nelson captured gold in the 100-meter hurdles at the 2008 Beijing Games. She earned silver four years later in London.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.