A judge in Vanuatu says there is case to answer over the government's decision to elect a new parliamentary speaker who went on to rule out a planned motion of no confidence.
The new government on Tuesday consolidated its position with the election of a new Speaker, Marcellino Pipite.
That followed last week's ousting of the Joe Natuman-led government in a motion of no confidence, and the subsequent election of Sato Kilman as Prime Minister.
The new opposition then issued its own motion for a no confidence vote which Mr Pipite rejected.
They then took legal action and in the Supreme Court on Thursday Justice Dudley Aru decided there is a case to be heard against the change in Speaker.
It will be heard on Monday afternoon.