Australians are expected to learn details of how the nation will honour Prince Philip, the Duke of Edinburgh, who has died aged 99.
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Queen Elizabeth's husband died on Friday only a short time after a month-long stay in hospital.
The Australian Flag will fly at half mast on Saturday in a sign of condolence.
Prime Minister Scott Morrison said the duke's death marked the end of an era.
"He embodied a generation that we will never see again."
Prince Philip visited Australia 21 times, the first in 1940 before his marriage, as a midshipman aboard the battleship Ramillies.
Some of his trips to Australia earnt international headlines for controversial comments.
On one occasion he asked an Aboriginal elder: "Do you still throw spears at each other?".
In 2015 Prince Philip was controversially awarded Australia's then-highest honour as a Knight of the Order of Australia. The honour is no longer presented.
Prime minister at the time, Tony Abbott, who was criticised for the award, said the world seemed "a little emptier" after the death of the duke.
"He combined great character with being a dutiful royal and demonstrated over eight decades there is no better life than one lived in service to others," Mr Abbott wrote.
The Australia Republic Movement offered its condolences to the royal family.
"For almost 70 years he provided unwavering support to Australia's head of state, Queen Elizabeth II, making a significant contribution to the community as consort of the British monarch," chair Peter FitzSimons said in a statement.
Former Australian prime minister and republican Malcolm Turnbull posted a brief message on Twitter.
"Farewell Prince Philip - always charming to this republican."
Peter Kaye is the CEO of the Duke of Edinburgh's International Award Australia and had been part of an international organising committee, encouraging all recipients to wear their badges on June 10 to mark the prince's 100th birthday.
"We'll still proceed with celebrations of his life and the living legacy that he's left this generation and future generations of young people," he told ABC TV.
Prince Philip had not wanted a state funeral in the UK and the details of any Australian event are yet to be revealed.
"Further details about Australia's remembrance of Prince Philip will be announced over coming days," Mr Morrison said.
Australian Associated Press