"Investigators believe multiple people were shot outside a nightclub near Little Chapel Street and Malvern Road about 3:20 am," the Victoria Police said in a statement.
It did not give any more details including the condition of the victims, but said the shooting occurred in Melbourne's Prahran district.
Local media said there were three or four victims.
"The exact circumstances are still being established," police said.
A murder-suicide last year which left seven members of a family dead in WesternAustralia was the country's worst mass shooting since the Port Arthur case.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)