Thanks very much for reading Need to Know and our coverage of Prime Minister Anthony Albanese confirming the date for the referendum on an Indigenous Voice to parliament. Here are the biggest developments of the day so far:

- Voice referendum confirmed for October 14: Anthony Albanese has confirmed the Voice to parliament referendum will take place on October 14 – a date set to go down in history as a landmark in Indigenous reconciliation.

- Former Snowy Hydro boss shocked over cost blowout: Former Snowy Hydro CEO Paul Broad says reports that the cost of the Snowy Hydro 2.0 had blown out to $12 billion are shocking.

- Costello slams government over Qantas move: The former federal treasurer Peter Costello has slammed the Labor government’s decision to block international flights to and from Australia to protect the profits of national carrier Qantas.

- Russian mercenary boss Yevgeny Prigozhin is buried in private: A private burial was held for Yevgeny Prigozhin, ending a tumultuous journey from St Petersburg street thug to Kremlin-financed mercenary leader, following a suspicious plane crash two months after his brief mutiny that challenged the authority of Russian President Vladimir Putin.

- ‘An elite proposal’: Price says Voice will divide the country: Coalition Indigenous Australians spokeswoman Jacinta Nampijinpa Price has labelled the Albanese government’s Indigenous Voice to parliament as an “elite proposal” that will sow division in the country.