Long queues are reported nationwide as Kenyans vote in an election that observers describe as the most important in the country’s history.
Voters are complaining of having to wait under a hot sun for several hours.
There has been a series of violent incidents around the port town of Mombasa, with at least five police officers killed in one attack.
Authorities have urged Kenyans to avoid the widespread bloodshed that followed the disputed 2007 election.