A top German biathlete and an Italian bobsledder were kicked out of the Sochi Olympics on Friday in the first doping cases of the Winter Games.
Former two-time Olympic gold medallist Evi Sachenbacher-Stehle tested positive for the stimulant methylhexanamine in both her "A'' and "B'' samples, the German Olympic Committee said.
The committee said she has been removed from the team and was being sent home.
Sachenbacher-Stehle — winner of two golds and three silvers in cross-country skiing at previous games — blamed the positive test on a nutritional supplement and said she had never knowingly taken performance-enhancing drugs.
"I am going through the worst nightmare that you can imagine, because I am unable to explain at all how there could be a positive test," she said in a statement.
The Italian Olympic Committee, meanwhile, announced that bobsledder William Frullani was ejected from the games after testing positive for the banned stimulant dimetylpentylamine in the athletes village on Tuesday.
Frullani, who had not competed yet, asked for a backup test that "confirmed the positive result, resulting in his exclusion from the Italian delegation," CONI said.