Vanuatu's Prime Minister Sato Kilman has indicated he aims to sack the speaker of parliament, Maxime Carlot-Korman, through a motion in the house tomorrow.
Mr Kilman also plans to move a motion against the first and second deputy speakers during the extra-ordinary session.
The speaker and his deputies are currently in the opposition.
Mr Carlot-Korman's position as speaker has been questioned by the coalition government of Mr Kilman following his role in the controversial parliamentary ousting of Mr Kilman as Prime Minister in April.
Mr Kilman subsequently challenged Mr Carlot-Korman ruling in the Appeal Court and won the case.
Meanwhile, Mr Carlot-Korman says that he intends to caution some MPs over changing of their political affiliation which he says has caused the parliamentary instability of the last six months.
He warns that he can go as far as suspending some members.