Two-thirds of Tokyo 2020's corporate sponsors are undecided on whether to continue supporting the Games now the event has been pushed to 2021, AFP reported, quoting a survey published by Japanese media.

In the poll published by Japanese public broadcaster NHK, 65 per cent of the sponsors surveyed said they had not made up their minds about whether to extend their financial backing for another year.

Some companies voiced concerns that their promotional activities around the Games could be curtailed due to crowd-reduction measures imposed against the coronavirus. They were also worried the Games could be scrapped altogether, with several senior Olympic officials saying the Tokyo Olympics must take place next year or not at all.