SOCHI, Russia - The International Olympic Committee says a Latvian hockey player has been expelled from the Sochi Olympics after failing a doping test.

The IOC says Vitalijs Pavlovs tested positive for the stimulant methylhexaneamine after Latvia's loss to Canada in the quarterfinals. He is the fourth athlete to fail a drug test at the games.

Italian and German athletes test positive for banned substances at the Sochi 2014 Winter Olympic Games. Gavino Garay reports. Gannett

Earlier Saturday, the Ukrainian Olympic Committee said cross-country skier Marina Lisogor tested positive for the stimulant trimetazidine. The latest positive tests follow those of German biathlete Evi Sachenbacher-Stehle and Italian bobsledder William Frullani.