King Charles III has been officially declared as the ruling monarch of Australia by Governor-General David Hurley.
The crown has only come to Prince Charles Philip Arthur George because of the death of our pleasant and glorious Queen Elizabeth II, General Hurley proclaimed.
May King Charles III reign over us in the long and happy years to come.
We promise him faith and faithfulness with hearty and humble affection. The proclamation was signed by General Hurley and countersigned by Prime Minister Anthony Albanese.
The Australian Army Band Corps played its first rendition of God Save the King in more than 70 years as the flags were raised to fly at full-mast.
The Governor-General was welcomed with a smoking ceremony and welcome to the country by Ngunnawal elder Aunty Violet Sheridan before the Australian national anthem was played.
General Hurley said today that it was the beginning of a new era, as the Prime Minister and Federal Executive Council recommended the proclamation of King Charles III.
Australia is an unfinished product, and is entering a new era, General Hurley told the council.
Your loyalty to Australia and your work in the parliament will help our country build on the successes of the second Elizabethan age. Anthony Albanese told the council the first proclamation of a new monarch in his lifetime, and the lifetimes of most Australians, is an historic event. The flag will return to half-mast at dusk, where it will remain until the day after Queen's funeral.
This evening, Australia's high commissioner to the United Kingdom will attend a reception with the King and other Commonwealth high commissioners.
Later in the week, the Prime Minister and Governor-General will fly to England, where they will meet King Charles III.
Earlier this morning, Mr Albanese told the ABC that a national day of mourning will be made a one-off public holiday after he returns from Queen's funeral in London.
More to come.