International Olympic Committee (IOC) member Patrick Hickey, arrested in Brazil this week as part of an investigation into illegal ticket sales, has not yet been heard by a judge and should be presumed innocent, IOC President Thomas Bach said on Saturday.
Olympics chief Thomas Bach called for a complete overhaul of the global anti-doping system on Tuesday after revelations of state-backed cheating by Russia rocked preparations for the Rio Games.
The International Olympic Committee reported 45 new doping failures on Friday from the 2008 Games in Beijing and London 2012, bringing the total number of positive drug test to 98 since a retesting programme was launched.
IOC president Thomas Bach said on Wednesday that athletes and federations face life bans from the Olympics as he warned that doping has hit "an unprecedented level of criminality".