Reykjavik - Iceland's conservative prime minister won a snap election despite a string of scandals, final results confirmed on Sunday, but it remained unclear whether he could form a viable coalition.Bjarni Benediktsson, 47, was accused named last year in the "Panama Papers" worldwide tax-evasion leaks. He has also been accused of wrongdoing during Iceland's financial collapse in 2008.Nevertheless his Independence Party beat its rivals in Saturday's election, according to final results published on Sunday.It won 16 seats in the 63-seat parliament. Turnout was 81%.No party won a majority. It could take months before Iceland has a new government in place as thorny coalition negotiations await.PM 'optimistic' Benediktsson fended off a challenge from the Left Green Movement and its potential allies, the Social Democratic Alliance and the anti-establishment Pirate Party.The Left-Green Movement came in second with 11 seats, the Social Democratic Alliance with seven seats, and the Pirates with six seats.Under the Icelandic system, the president tasks the leader of the biggest party with forming a government."I am optimistic that we can form a government," Benediktsson told AFP after early results on Saturday showed him in the lead.The prime minister called the snap election in response to various allegations of wrongdoing, which he denied.The Independence Party lost five seats in parliament, according to Sunday's results.But it still came out on top - apparently helped by Iceland's thriving economy, fuelled by a flourishing tourism sector.Long talks ahead The party has been involved in almost every government in Iceland since 1980.But growing public distrust of the elite has spawned several anti-establishment parties.They have splintered the political landscape and made it increasingly difficult to form a stable government.Eight parties won seats in parliament.Benediktsson's main rival, the Left-Green Movement won fewer votes than expected.It will need at least five allies to form a 32-seat majority to dethrone the conservatives.If it managed to do so, it would form only the second left-leaning government in Iceland since the country's proclamation as a republic in 1944. "I'm worried that we may have to face up to the likelihood of long, drawn-out discussions and attempts to form a government," Arnar Thor Jonsson, a law professor at Reykjavik University, told AFP.Negotiations to form a coalition after the October 2016 election took three months.Some voters are tired. It was Iceland's fourth election since 2008 and the second in a year."I hope we will have more stable politics now... but I'm rather pessimistic about it," Einar Orn Thorlacius, a lawyer in Reykjavik, told AFP.Financial scandals Benediktsson called Saturday's election after a junior member of his centre-right coalition pulled out over a legal controversy involving the prime minister's father.Benediktsson is a former lawyer and businessman whose family is one of the richest and most influential in Iceland.He has been implicated in several financial scandals and was mentioned in the Panama Papers -- leaked documents that exposed offshore tax havens.That scandal forced the resignation of then prime minister Sigmundur David Gunnlaugsson.Gunnlaugsson made a come-back to lead one of the new parties that ran in Saturday's election.Despite the scandals, many voters view Independence as the main force for economic stability and growth. Nearly half of the country's post-war prime ministers came from that party.Analysts said the strongest possible government would be a three-party coalition comprising the two biggest parties, the Independence and the Left-Greens -- but their clashing ideologies make such a collaboration unlikely."The Left-Greens would have to swallow their pride. That could probably be the most stable government," said Egill Helgasson, a political commentator at public broadcaster RUV.Left-Green leader Katrin Jakobsdottir, 41, told AFP on election night she was keeping all options open."We have eight parties in parliament and right now there doesn't seem to be any obvious majority. All parties are open for discussion," she said.Her campaign promises included investing in social infrastructure and ensuring that Iceland's economic prosperity reaches the health care and education sectors.