A former Papua New Guinea chief justice Sir Arnold Amet says outside help may be needed to overcome the country's constitutional crisis.
With rival administrations claiming legitimacy and parliamentary votes purporting to nullify Supreme Court rulings, Sir Arnold says the demarcations between the three principal arms of government are being undermined.
Sir Arnold, who is the attorney-general in the Somare-led administration, says PNG has now seen a series of unconstitutional actions by the O'Neill government.
"Our international partners of the Commonwealth and other organisations that believe in the principles of the separation of the three principal arms of government and the independence of the judiciary amy need to become involved."
A former Papua New Guinea chief justice Sir Arnold Amet