Athletics - Harper-Nelson banned after not checking medication properly

Hurdler Dawn Harper-Nelson poses for a portrait at the U.S. Olympic Committee Media Summit in Beverly Hills, Los Angeles, California March 7, 2016. REUTERS/Lucy Nicholson

Beijing Olympics 100 metres hurdles champion Dawn Harper-Nelson has been banned for three months after she tested positive for the banned diuretic hydrochlorothiazide, the United States Anti-Doping Agency (USADA) said on Tuesday.

The ban is effective from Dec. 1, 2016.