In pictures: Violence and queues mar huge turnout for Kenya elections

Multiple attacks against security forces in Kenya killed at least 12 people today as Kenyans waited in long lines to cast ballots five years after more than 1,000 people died in election-related violence. Jennifer Huxta / AFP Photo

The country's two leading presidential candidates condemned the attacks. The prime minister, Raila Odinga, called it a "heinous act of aggression" while the deputy prime minister, Uhuru Kenyatta, said he was discouraged by the news but was sure the security situation would be brought under control. Dai Kurokawa / EPA

Long queues around the country left voters frustrated in the election's early hours. The use of anti-fraud fingerprint voter ID technology for the first time appeared to be greatly slowing the process. The technology broke down in many locations. Jerome Delay / AP Photo

"Never before have Kenyans turned up in such numbers," Raila Odinga, the prime minister said. "I'm sure they're going to vote for change this election." Jennifer Huxta / AFP Photo

The chairman of the Independent Electoral and Boundaries Commission, Ahmed Issack Hassan, urged voters not to be intimidated by the violence. But he also told poll workers that they must ensure voters do not spend hours in queues. Jennifer Huxta / AFP Photo

Graffiti promoting peace outside Ondugu Polling Station in the constituency of Kibera in Nairobi.

A woman gets her nail painted wiith a marker to indicate that she has been through the voting proccess in the Fort Jesus Museum Polling station in the Mvita Constituency in Mombasa. Ivan Lieman / AFP Photo

The country’s leaders have been working for months to reduce election-related tensions, but multiple factors make more vote violence likely. The tribes of the top two presidential candidates have a long history of tense relations and, with voters also electing 47 new governors, the chances of electoral problems at the local level occuring inevitably increase. James Keyi / AP Photo

“We should prepare these voting areas sooner,” one voter said. “Confusion. All the time it’s confusion.” Marko Djurica / Reuters