If reports of George Brandis instructing the former Solicitor-General to act in a political way and ignore the rule of law are true, he should immediately resign or be sacked as Attorney-General.

"It appears Senator Brandis was trying to interfere with the Solicitor-General to stitch up a politically cosy deal for the Western Australian Liberal Government," Australian Greens Justice spokesperson Senator Nick McKim said.

"If it looks like corruption and smells like corruption, then it probably is corruption."