The prospect of the Olympics being forced behind-closed-doors has increased significantly after chief organisers said spectators are not a "must have".
Organisers had previously played down fears that the Games would take place without fans, despite refunds being offered for the rearranged event. International Olympic Committee president Thomas Bach stepped back from promising crowds on Thursday, saying organisers must be "flexible" amid Covid-19 surges.
Senior IOC member Dick Pound added to the fresh uncertainty, telling Kyodo News: "The question is, is this a 'must have' or 'nice to have'? It's nice to have spectators. But it's not a must have."
Their comments come after Sir Keith Mills, the former chief executive of London 2012, suggested it is "unlikely" that the Games will take place at all.
With the world in a race against time to get vaccinated, close to 80 per cent of Japanese people believe the Olympics, already postponed by a year because of the pandemic, should be delayed again. The logistical minefield has been underlined by chaos at the much smaller Australian Open, where 72 players are confined to their hotel rooms in Melbourne for 14 days.