Swimmer tests positive for banned substance at Rio Olympics

A female Chinese swimmer has tested positive for a banned substance at the Rio Olympics, China's swimming association said - the first competitor in the sport to fail a test at the 2016 Games.

The Chinese Swimming Association said Chen Xinyi tested positive for the diuretic hydrochlorothiazide after she finished fourth in the women's 100m butterfly last Sunday, missing a bronze medal by nine-hundredths of a second. Xinhua, China's official state news agency, reported today.