The Latest Breaking News from Peter Gray SC

A Liberal senator has admitted relying on "say so" before allegedly defaming the head of a large NT Aboriginal land council over a claimed vote of dismissal.

Police were called to a court a where outspoken Senator Jacinta Nampijinpa Price is on trial for allegedly defaming the boss of an Aboriginal land council.

John Quigley returns to the Federal Court to "correct" evidence he gave in defamation proceedings involving the WA Premier and Clive Palmer, with the judge saying Mr Palmer's lawyers were drawing "a bit of a long bow" by saying Mr Quigley was deceitful.

Insider text messages between Mark McGowan and Kerry Stokes are aired in court, including an exchange where the WA Premier thanks the media mogul for "marvellous" front page articles depicting Clive Palmer as a cockroach and cane toad.

The WA Premier tells a defamation case comments by Clive Palmer created "a band of angry people in the community", as he denies lying about having health advice saying a WA border closure was "necessary".

Lawyers for businessman Clive Palmer and WA Premier Mark McGowan have argued about the meanings of statements by both men in defamation proceedings.