Prior to the interruption, the king was introduced by Australian Prime Minister Anthony Albanese, per PBS. Albanese has expressed a desire to make Australia a republic with an Australian head of state. Australia is still a constitutional monarchy with Charles at the head of state.

During his trip, King Charles also admitted that it was “slightly worrying” to realize his first visit to Australia had been in 1966, when the then-17-year-old Prince Charles studied abroad at Timbertop, a remote campus of Geelong Grammar School in Victoria, Australia.

King Charles III was heckled in Australia on Monday by an Indigenous senator who shouted “you’re not my king” as the British monarch spoke to lawmakers.