Prime Minister Peter O'Neill set up the inquiry last year following the issue of an arrest warrant for him in relation to his alleged involvement in illegal payments to a law firm headed by Paul Paraka.
It was anticipated that the Prime Minister would table the report by former judge Warwick Andrews in parliament when complete.
However the Fly River provincial government is believed to be aggrieved by its potential release and was seeking a judicial review from the National Court.
Paraka was arrested last year on multiple charges relating to defrauding the state of tens of millions of dollars.
The anti-corruption-focused Taskforce Sweep investigation into the charges against Paraka was related to the arrest warrant that was issued for the Prime Minister.
O'Neill was never arrested and maintains his innocence.