An intensifying clash between the central government and its own advisers over attendance restrictions during the Tokyo Games is hounding organizers just five weeks before the opening ceremony of the Olympics on July 23.

Banning all spectators is the safest way to host the Tokyo Games, according to a report published Friday by Shigeru Omi, chair of the central government’s coronavirus subcommittee, and 25 other experts.

“The virus is still spreading in Japan regardless of the Tokyo Games,” Omi said during a news conference Friday evening. “It comes down to whether organizers can manage the risks and work with local authorities to ensure the safety of all participants.”