The Albany Leisure and Aquatic Centre closed abruptly last night with all patrons told to leave after it was discovered that a suspected COVID-positive case had visited the site multiple times during the week.
Hundreds of people were inside the centre at 7pm on Wednesday when an announcement was made asking patrons to leave immediately.
Taking to social media, the Albany Leisure and Aquatic Centre apologised for the inconvenience.
"Due to a suspected Covid-19 case attending Albany Leisure and Aquatic Centre this week, the centre will be closed until further notice."
"We will continue to keep you informed and updated on the current situation.
"We apologise for the inconvenience."
The Albany Basketball Association said a positive COVID-19 case played at the centre on Monday, February 21 at 7pm and Tuesday, February 22 at 6pm.
"All players involved in these games may be deemed a close contact and should follow state government guidelines and procedures immediately."
"We have been advised that coaches and managers are not deemed close contacts as they were wearing masks."
"We have also been advised that referees are not deemed close contacts."
The Department of Health told the ABC there were zero confirmed cases of COVID in the great southern four hours before the centre was evacuated.
Albany mayor Dennis Wellington said it was a matter of time before COVID reached the Great Southern city.
"We knew it was coming, we just didn't know it would come this quickly," Mr Wellington said.
"I would recommend that everyone who was there get tested … It's better to be safe than sorry."