Victorian Premier Daniel Andrews has hit back after his electorate office was vandalised, with slogans calling for him to be sacked.
It's the second time in less than a month his suburban office has been targeted.
"Sack Dan" was scrawled in red across glass on Wednesday night, while a brick is believed to have been thrown at a window, cracking it.
"What I'd say to those individuals and all Victorians is 'Graffiti doesn't work against this virus'," Mr Andrews said on Thursday.
Liberal opposition leader Michael O'Brien denied aggressive anti-government campaigning by party colleague Tim Smith had incited the violence.
Mr Smith recently handed out a "catch and kill" deck of cards, an imitation of a tactic used by the American military during the Iraq war in 2003.
Instead of the names of wanted Saddam Hussein regime members, the cards bore the face of Mr Andrews and senior government officials.
"The idea that anything that an MP says leads to that sort of outcome (vandalism) is just nonsense," Mr O'Brien told reporters.
He said vandalism is "absolutely unacceptable" and political attacks have no place in the state.
"That's not the way we do things here in Victoria, and I condemn it unequivocally. There is no place for this," he said.
"I have no doubt that the premier's staff will be feeling nervous and concerned after that attack. So my sympathies are with them."
Victoria Police cordoned off the Noble Park office and say investigators were told the damage was done by an unidentified person.
Mr Andrews said his office staff are "absolutely fine" and are getting on with their jobs.
There is growing frustration in Melbourne over the city's ongoing tough coronavirus restrictions.
While the premier has said some of those measures will be eased on Monday, it won't be as many as first hoped.
Mr Andrews is also under pressure over the state's disastrous hotel quarantine program, which is believed to have sparked the second wave of infections, leading to the deaths of hundreds and the enforcement of restrictions in the regions and metropolitan Melbourne.
Late last month, slogans including "Tyrant" were spray painted on the windows of Mr Andrews' office.
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