The International Testing Agency says cross-country skier Valentyna Kaminska has tested positive for doping with a steroid and a banned stimulant.
Valentyna Kaminska already competed in all her three events at the Beijing Olympics and did not come close to the medals.
Kaminska, 34, is competing for Ukraine now after representing Belarus at the Winter Games in 2014 and 2018.
The ITA says Kaminska's sample taken last Thursday tested positive for mesterolone and heptaminol.
She is now provisionally suspended from all competitions pending a prosecution of her doping case.
It's the second doping sample taken at the Beijing Olympics to test positive. The first involved Alpine skier Hossein Saveh Shemshaki of Iran. The contentious case of Russian figure skater Kamila Valieva involves a test taken before the Olympics.