Papua New Guinea's Sir Michael Somare group has taken issue with rival caretaker Prime Minister Peter O'Neill's questioning of the integrity of the Chief Justice, Sir Salamo Injia.
On Monday, the Supreme Court ruled Sir Michael was illegally removed from office by the O'Neill faction last August.
Mr O'Neill has called the ruling illegal because two of the five judges on the bench abstained from the decision.
His accusation that Sir Salamo is biased has been described as questionable by Sir Michael's spokesperson, Betha Somare:
"Who is Peter O'Neill to question the integrity of the Chief Justice? If they thought that the Chief Justice was biased, they should have questioned that on the 2nd of August when the East Sepik provincial government took up that reference before the Supreme Court. To sort of question his integrity towards handing down of the decision is a bit sinister."