The Latest on the Russian doping case (all times local to Rio de Janeiro):
11:45 a.m.
The International Olympic Committee says it has opened investigations into top Russian sports officials and is seeking to bar them from the Rio de Janeiro Games.
The IOC statement comes after a World Anti-Doping Agency report accused Russian Sports Minister Vitaly Mutko and his officials of overseeing a cover-up of hundreds of doping test failures by Russians.
The IOC has set up a disciplinary commission led by former French Constitutional Court judge Guy Canivet to look into "officials within the Russian Ministry of Sports and other persons mentioned in the report.