A member of the Ugandan Olympic team who tested positive for the coronavirus upon arrival in Japan had the delta variant, Japan's Olympic minister said on Friday, adding to concern that the games — less than a month away — may trigger a new wave of infections.

A coach in the nation's delegation tested positive after arriving in Japan on June 19, while a second member, an athlete, tested positive on Wednesday after arriving in the team's host city of Izumisano, Osaka Prefecture, officials said previously.

Olympic Minister Tamayo Marukawa told a news conference that the person who arrived on Saturday had been found to have the delta variant, NHK reported, adding that an analysis was also being conducted on the second confirmed case.