Two Australian Open tennis players have tested positive for Covid-19 after arriving in the city of Melbourne, amid growing controversy over the event.
A third case involved a "non-playing participant", according to the state of Victoria's chief health officer.
Some 1,200 people, including players, staff and officials, have flown into Australia for the tournament, which begins on 8 February.
But a row over quarantine rules has cast a shadow over the upcoming event.
Positive cases on three flights have forced 72 players into full quarantine, meaning they have to isolate full-time in their hotel room for 14 days instead of being allowed outside to train like other participants.