On 24 May in northern Melbourne, 4 cases of COVID-19 in the community were reported; this broke Victoria's streak of 86 days with no community transmission.
Another 5 community cases, for a total of 9, were reported on 25 May. 4 of them were family contacts of a man, who may have been the source of the outbreak, who tested positive on 2 May.
As a result, restrictions in Greater Melbourne were again tightened from 6pm on Tuesday, 25 May, to at least Friday, 4 June.