MALE, Maldives: Police in the Maldives forced the postponement of Saturday's presidential polls, declaring the vote illegal and blocking ballot papers from leaving the offices of the independent Elections Commission.

The commission just hours earlier announced the vote would go ahead as planned despite 11th-hour court challenges by two candidates who were expected to lose to a former president.

“We continued with preparations for voting, but the Maldives Police Service have said no documents connected to the election can leave the commission's offices,” Commission Chairman Fuwad Thowfeek said in a statement.

“A new date for elections will be informed later.”

Police spokesman Abdulla Nawaz told AFP that they considered it illegal to stage the election in violation of a Supreme Court order that required all candidates to approve electoral lists.

“Only one candidate had signed the voter register and therefore it would have been a violation of the Supreme Court guidelines for the election to go ahead,” Nawaz said.

The Supreme Court last week annulled the first round of voting on September 7, citing irregularities — even though international observers said the polls were free and fair — and ordered a re-run.

There was no immediate reaction on the narrow streets of the rain-soaked capital island Male. Few vehicles and people could be seen on the road as heavy monsoon showers lashed the archipelago.

Former president Mohamed Nasheed's Maldivian Democratic Party (MDP) slammed the latest scuttling of the elections and called for foreign intervention in the young democracy.

“We see a clear mandate for the international community to intervene and to restrain these undemocratic forces that are preventing a peaceful democratic political transition of the Maldives,” MDP spokesman Hamid Abdul Ghafoor told AFP.

He said an “interim arrangement” should be sought through international intervention, but did not elaborate.

Forty-six-year-old Nasheed, who says he was ousted in a coup involving rogue elements in the police last year, won 45.45 per cent of the vote in September — short of the 50 per cent threshold needed for outright victory.

The election was meant to end political tensions that followed the controversial downfall of Nasheed in February last year, but it has caused more instability in a country that embraced multi-party democracy in 2008.

Nasheed, the frontrunner, insisted Friday that the poll go ahead as planned, dismissing the challenge by business tycoon Qasim Ibrahim, who came third in last month's aborted poll, and Abdullah Yameen, who was a distant second.

The police announcement meant that the Elections Commission could not transport some ballot boxes to remote islands in the archipelago of 1,192 coral islands, of which 202 are inhabited.

The United States and regional power India had called for the election in the tourist paradise to go ahead without further obstacles. There was no immediate comment from either after the latest developments.

Yameen, the half brother of the islands' long-time ex-ruler Maumoon Abdul Gayoom, won 25.35 per cent in September's poll and would have faced Nasheed in a run-off but the decision to order a re-run allowed third-placed candidate Ibrahim to re-enter the contest.

There has been heavy international pressure to ensure the country chooses a new president by November 11 in line with its constitution.

Gayoom ruled the Maldives for 30 years until he lost the first democratic election in 2008 to Nasheed but observers say Gayoom's supporters still control key levers of power such as the judiciary and do not want to see Nasheed return to office.

India dispatched Foreign Secretary Sujatha Singh for talks with leaders Thursday to ensure the elections went ahead.

Western diplomats have also been following the unfolding events with alarm.

Outgoing president Mohamed Waheed, who replaced Nasheed but is not running again, had promised a smooth transition of power. He was humiliated in the September 7 vote, winning just over five per cent of ballots.