Anti-vaccine mandate protesters, 'sovereign citizens' and conspiracy theorists have gathered outside the governor-general's official residence in Canberra.
What appears to be hundreds of protesters have marched up to the gate at Government House, screaming to "drop the mandate" and "no more corporate governance".
One protester called for Governor-General David Hurley to come out and speak to the people, and stand down the prime minister for treason.
"The people have been woken," one protester said on a livestream of the protests.
Threats were also made directly against the Prime Minister Scott Morrison, with calls for him to face the gallows.
There was widespread criticism of protesters in Melbourne who brought a gallows to the state's parliament during protests last year.
ACT Policing has alerted the Canberra community that protests are expected to increase in coming days and called for the protesters to conduct any movements lawfully and peacefully.
"Police will respond where required and the people responsible will be dealt with in accordance with the law," a spokesperson said.
Protesters have previously marched on Parliament House, Old Parliament House and the airport as politicians arrived for parliament sitting this week.
Renegade MP Craig Kelly is reportedly trying to bring a contingent of the protesters into Parliament House on Tuesday to deliver demands to the prime minister.
