Parliament is expected to meet today in the turbulent island nation, where Yameen wants to extend by a month sweeping emergency powers that have provoked censure from the international community.
Yameen's office said the extension was warranted "as the threat to national security has not diminished and the constitutional crisis has not been resolved".
It is expected parliament -- which Yameen shuttered in a recent crackdown on opponents -- will rubber stamp the existing state of emergency and renew it further.
But South Asian Speakers and Parliamentarians, a regional grouping of legislators, urged the Maldives speaker to ensure the rule of law.
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The "declaration of emergency and arrests and disrespect of the supreme court rulings, undermine the rule of law and the independence of the judiciary", Karu Jayasuriya, the groups chairman and Sri Lanka's speaker, said in a statement.
Yameen refused to abide the Supreme Court when it ordered that the MPs be reinstalled and a number of high-profile political prisoners be released.
His estranged half-brother, former president Maumoon Abdul Gayoom, was among those arrested on a charge of bribing Supreme Court justices to topple the government through a constitutional coup.
The UN human rights chief has described the state of emergency as "an all-out assault on democracy".
Yameen has jailed almost all his political opponents since coming to power in late 2013.
The latest unrest has dented the Maldives image as a popular holiday destination. The nations top earner is tourism, with holidaymakers drawn to its pristine islands and crystal-clear blue waters.
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