Australia’s second-most populous city will enter a five-day snap coronavirus lockdown, Reuters reported, quoting authorities.

Victoria Premier Daniel Andrews announced the lockdown for the state, starting at midnight on Friday, calling it a “short, sharp circuit breaker” banning public gatherings, home auctions, weddings and religious gatherings.

“We must assume that there are further cases in the community than we have positive results for, and that it is moving at a velocity that has not been seen anywhere in our country over the course of these last 12 months,” Andrews told reporters, noting the high transmission rate of the UK variant.

Asked about the Australian Open, the premier said the Grand Slam tournament, one the biggest events in the country’s sports calendar, was considered a workplace, subject to lockdown restrictions.

“There are no fans. There are no crowds. These people are essentially at their workplace,” he said.