Papua New Guinea's opposition has accused the Prime Minister Sir Michael Somare of breaching more rules with his latest reshuffle.
Sir Michael's move to replace the deputy Prime Minister Don Polye with Sam Abal this week came as the Public Prosecutor stated he would launch a tribunal into the Prime Minister's alleged misconduct in office.
Sir Michael will step aside in the interim if a tribunal is established.
The opposition's Bart Philemon says Mr Abal has been appointed to the position because he is more loyal to Sir Michael than Don Polye.
But Mr Philemon says under the rule of Sir Michael's National Alliance party, Mr Abal is not entitled to be his Deputy.
"I have been on the founding members of the National Alliance party so I know the constitution very well in regards to the role of Deputy Prime Ministers and the provision in the constitution provides that one of the four leaders representing the four regions of PNG shall be appointed as the Deputy Prime Minister. So in so far as the constitution of National Alliance goes, he's breaching that."