The German Olympic team has confirmed that that biathlete Evi Sachenbacher-Stehle failed a drug test.
She's the first person at the Russian Winter Olympic Games to test positive for doping -- and has since been sent home.
The two-time Olympic champion tested positive for a banned stimulant.
But she's not the only Olympian who's been caught doping --
This image from 2002 shows Italian bobsled athlete William Frullani.
Italian officials say he has been excluded from the team, but that they have been given permission to replace him with another athlete in their the four-man bobsled team.