A Super Rugby spectator at last weekend's Melbourne Rebels game has tested positive for coronavirus.
The man attended AAMI Park in Melbourne on Saturday for the Rebels' fixture against the Lions.
"The gentlemen was seated in section nine and at this stage we are unaware of his exact seating ... due to the withholding of his identity at this point," Rebels chief executive Baden Stephenson said in a statement on Wednesday.
"We are taking this matter very seriously and we are working with all relevant stakeholders to determine any potential consequences of his attendance."
Stephenson said Victoria's Department of Health and Human Services described staff and spectators who may have come into contact with the man as "casual contacts".
As such, they are not required to take any action but if they become unwell in the next 14 days they should seek medical attention and be tested for coronavirus.