Australia news live: WA, SA and Victoria close borders to Queenslanders; Christian Porter says 'no regrets' on launching ABC defamation action

Queensland reports four new local Covid cases of UK variant; two of the cases visited Byron Bay; Porter responds to cabinet move; Malcolm Turnbull in line to head NSW climate advisory board. Follow the latest

• Victoria declares Brisbane a red zone; WA introduces hard border with Queensland; South Australia shuts border to Queensland
• Queensland Covid hotspots; Covid hotspots NSW
• Malcolm Turnbull in line to head NSW climate advisory board
• Nationals MP Anne Webster lodges sexual harassment complaint against Coalition colleague

8.57am BST

With that, we'll be closing our blog for today.

Thanks for reading. And thanks to Matilda Boseley and Elias Visontay for running it earlier today.

8.51am BST

The former prime minister Malcolm Turnbull has been appointed to lead a new NSW climate advisory board that has promised to guide the state to carbon neutrality.

As flagged in the blog earlier today, Turnbull will chair the state's new Net Zero Emissions and Clean Economy Board. It is his first political appointment since leaving federal parliament in 2018. He was recommended by state's Energy and Environment Minister, Matt Kean, and approved by the NSW cabinet on Monday afternoon.