Moscow: More Russian athletes may be disqualified from international games for using banned drugs amid the latest revelation of doping among Russian sports stars, the country's sports minister Vitaly Mutko said on Tuesday.

On Monday, former tennis World No.1 Maria Sharapova announced in Los Angeles that she was informed by the World Anti-Doping Agency (WADA) that she failed a drug test at the Australian Open in January, reports Xinhua.