international skating union saying it cannot comment if anything has to do with doping. that leaves us to try to fill in the gaps here. a number of sources have told cnn sports analyst christine brennan that somebody, an athlete who is a minor, has tested positive for prohibited substances. now there is only one minor on the six-person russian olympic committee skating team and she was a breakout star in these winter olympics. the 15-year-old camila valiyeva. the russian new hampshire rbc sports, they say one of the six skaters on that team in december tested positive for a banned substance called trimedizine. it s a banned metabolic modulator. the spokesperson for the russian foreign ministry has issued a