The Supreme Court in Papua New Guinea is again being asked to determine who is the country's legitimate prime minister.
An order by the court's order last month to reinstate Sir Michael Somare as prime minister began a constitutional crisis.
Peter O'Neill remains the effective PM with the support of the police, defence force, public service and most parliamentarians.
But the ABC reports that confusion remains, so Mr O'Neill's attorney-general is formally seeking for the court's opinion on 29 constitutional questions.
The questions include:
whether or not the court can impose orders on parliament,
whether or not parliament can pass retrospective legislation and
whether or not the governor-general can refuse a directive from parliament to appoint a prime minister.
A date is yet to be set for preliminary hearings.
