The Latest on the Rio Games (all times local to Rio de Janiero):
12:13 p.m.
Swimming's global governing body FINA says it will retest doping samples from all Russians who competed at last year's world aquatics championships in Russia.
The championships were held in the Russian city of Kazan at a time when World Anti-Doping Agency investigator Richard McLaren has accused Russian government officials of overseeing a mass doping cover-up of failed drug tests by Russians.
The championships ran from July 24 through August 9, with Russia finishing third in the medal table. The championships also included diving, water polo and synchronized swimming.