Vanuatu's finance minister, Sela Molisa, has deposited a motion against the speaker of parliament, Maxime Carlot Korman, with the minister of Internal affairs, Moana Carcasses Kalosil.
This comes amid a complex dispute between the speaker and the prime minister, Edward Natapei, that is before the Supreme Court.
The speaker declared the prime minister's seat vacant last week but a stay order has left Mr Natapei in power.
Under the constitution, the speaker is elected by parliament and only the parliament has the power to remove him through a motion.
Mr Molisa says the speaker's decision to allow a no confidence motion against Mr Natapei to be debated next week goes against his decision to have him vacate his seat.
