Voting was extended in the Maldives presidential election Sunday amid technical glitches, after police raided the opposition’s campaign headquarters, fuelling fears of rigging in favour of China-friendly incumbent President Abdulla Yameen.

The Elections Commission said balloting was extended by three hours until 7 pm (local time) because of technical glitches with tablet computers containing electoral rolls, and officials had to use manual systems to verify voters.

Many voters said they stood in line for over five hours to vote in many parts of the Indian Ocean archipelago, as well as in neighbouring Sri Lanka and India where expatriate Maldivians voted.

“Eight hours & counting. Waiting to exercise my democratic right! Let’s do this, Insha Allah!,” former foreign minister Dunya Maumoon said on Twitter.

Maumoon, who is also the estranged neice of Yameen and daughter of former president Maumoon Abdul Gayoom, voted at a polling booth in the Maldivian embassy in Colombo.

Yameen, who is expected to retain power, has imprisoned or forced into exile almost all his main rivals in a crackdown. Critics say he is returning the honeymoon island nation to authoritarian rule.

The process is being closely watched by regional rivals India and China, who are jostling to influence Indian Ocean nations. The European Union and United States, meanwhile, have threatened sanctions if the vote is not free and fair.

Yameen voted minutes after polling booths opened in the capital Male, where opposition campaign efforts had been frustrated by a media crackdown and police harassment.

Before polls opened, police raided the campaign headquarters of the opposition Maldivian Democratic Party (MDP) and searched the building for several hours in a bid to stop what they called “illegal activities”. There were no arrests.

Yameen’s challenger, the relatively unknown Ibrahim Mohamed Solih, also cast his vote.

Solih has the backing of a united opposition trying to oust Yameen. It has struggled for visibility with the electorate because the media is fearful of falling foul of heavy-handed decrees and reporting restrictions.

Mohamed Nasheed, who was elected president of a newly-democratic Maldives in 2008 but who now lives in exile, urged the international community to reject the results of the election.

There were long queues in Male and at embassies abroad, where the opposition had urged Maldivians to turn out and vote.

Some 262,000 people in the archipelago — famed for its white beaches and blue lagoons — were eligible to vote in an election from which independent international monitors have been barred.

Only a handful of foreign media have been allowed in. The Asian Network for Free Elections, a foreign monitoring group that was denied access to the Maldives, said the campaign was heavily tilted in favour of 59-year-old Yameen.

Local observers said the balloting itself went off peacefully and most of the delays were due to technical issues with electronic voter registers. Results are expected by early Monday.

The government has used “vaguely worded laws to silence dissent and to intimidate and imprison critics”, some of whom have been assaulted and even murdered, according to Human Rights Watch.

There have been warnings that Yameen could try to hold onto power at all costs.

In February he declared a state of emergency, suspended the constitution and ordered troops to storm the Supreme Court and arrest judges and other rivals to stave off impeachment.

Yameen, on the eve of the election, told supporters he had overcome “huge obstacles” since controversially winning power in a contested run-off in 2013, but had handled the challenges “with resilience”.

The crackdown attracted international censure and fears the Maldives was slipping back into one-man rule just a decade after transitioning to democracy.

The US State Department this month said it would “consider appropriate measures” should the election fail to be free and fair. The EU in July also threatened travel bans and asset freezes if the situation does not improve.