Papua New Guinea's opposition leader, Belden Namah, has sought an urgent court order to stay the suspension of four policemen.
The four were suspended for allegedly carrying out an unlawful investigation into alleged corruption involving the prime minister, Peter O'Neill.
Mr Namah is seeking urgent orders restoring the four policemen back to the investigations into his complaint that he had lodged against the Prime Minister and two senior ministers.
He says it is apparent the Prime Minister and his Police Commissioner are hell bent on suppressing a properly constituted Police investigation.
The four were last week found to have used the wrong section of the Arrest Act to issue arrest warrants against the ministers and were told by the district court they are free to reissue them properly.
Mr O'Neill has rejected Mr Namah's accusations of any wrongdoing.