The Australian senator who disrupted King Charles‘s landmark speech at Australia’s Parliament House is now facing calls to resign following the latest stunt which has been largely criticised worldwide.

Lidia Thorpe, who is the first Aboriginal senator for the state of Victoria and frequently campaigns on First Nations issues, shocked the world with her outburst on Monday during the second full day of engagements for King Charles and Queen Camilla.

The politician hurled verbal abuse at the King yelling “you are not my King” and accusing him of committing “genocide” against the country’s indigenous people. She was then swiftly escorted out of the chamber.

However, she hit back again shortly after when she reposted a grim cartoon online showing the King beheaded. Ms Thorpe sits as an independent in the upper house of the Australian parliament.

But now Australia’s monarchists have urged her to resign as they vowed to do all things “necessary” to kick her out of Parliament.

Philip Benwell, National Chairman of the Australian Monarchist League, blasted Ms Thorpe’s “disgusting” and “disgraceful” behaviour during the King’s tour.

He said that the association is now “investigating legal avenues” in order to have her removed from Parliament.

Mr Benwell told Express.co.uk: “I was actually standing close to Lidia Thorpe and was able to watch her every move.

“She is a person who openly declared, on taking her place in the Senate, that she would be faithful and bear true allegiance to the monarch. That she did so to be able to sit in the Senate is beside the point.

“The fact is that, for whatever reason, she declared her allegiance to King Charles and yet she has now screamed to the King in person “you are not my King.” She also shouted other things on being escorted out of the Great Hall, which included swear words and worse.

“This person should resign from the Senate immediately as she has no place in a democratic chamber which values discourse and decisions but not insults and possible threats.”

He added: “The Australian Monarchist League is investigating legal avenues that may be necessary to remove her from the Parliament.”

Mr Benwell claimed that there are “tens of thousands” of Australians who have come out to greet Their Majesties, however, their first royal tour in the country since Charles’s ascension to the throne will be overshadowed by Ms Thorpe’s latest stunt.

He said: “The Prime Minister and the leader of the opposition both gave extraordinary speeches and yet it will not be the crowds, nor the political figures and even not the King and Queen that will be remembered but the disgraceful and disgusting behaviour of Lidia Thorpe.”