A motion for a vote of no confidence against Vanuatu's Prime Minister, Joe Natuman, has been lodged with speaker of the country's parliament.
The Speaker, Philip Boedoro, says his office is studying the legality of the motion.
Our correspondent reports that if the motion is accepted, a vote could take place this Friday.
It was placed by the opposition leader, Moana Carcasses, but no reasons have yet been given for why he feels the Prime Minister should go.
Mr Carcasses was replaced as Prime Minister by Mr Natuman in a vote of no confidence in May.
Mr Carcasses's latest motion has been backed by 27 of the 52 MPs - the minimum required for such an action.
There were two unsuccessful attempts last month to unseat Mr Natuman.