Up to 10,000 Japanese fans will be permitted at Tokyo 2020 Olympic venues.
BBC News reports overseas spectators are already banned but organisers said domestic fans could attend providing crowds did not exceed 50% of a venue's capacity.
Fans will not be allowed to shout or speak loudly and must wear face masks at all times while in venues.
The Olympics are scheduled to begin on 23 July, while the Paralympics follow a month later, from 24 August.
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