Polls have opened in Ivory Coast's largest city as the West African nation holds its first presidential election since a disputed vote five years ago triggered violence that killed more than 3,000 people.

Dozens of voters lined up outside a school in Abidjan's Plateau district Sunday before the official 7 a.m. start time for the vote that incumbent President Alassane Ouattara is expected to win.

Voting started one hour late at the school, and elsewhere, but local election official Kassoume Toure said all materials had been received.

In 2010, Ouattara defeated incumbent Laurent Gbagbo who refused to concede, sparking the worst fighting the country has experienced since independence.

Ouattara has touted an economic rebound and security gains though opponents say he has failed to reconcile the country or alleviate poverty.