The Olympic rings is displayed inside the National Stadium in Tokyo on Nov. 15, 2020.

International spectators will not be allowed to enter Japan for this summer's Olympic Games amid public concerns over coronavirus, organizers said on Saturday, setting the stage for a drastically scaled-back event.

Some 600,000 Olympic tickets purchased by overseas residents will be refunded, as will another 300,000 Paralympic tickets, Toshiro Muto, the chief executive of the Tokyo 2020 organizing committee told a news conference.