Nairobi - Former US Secretary of State John Kerry says Kenya's ability to secure its voting system "appears to be very, very strong."
Kerry is leading a mission of election observers who have monitored Tuesday's vote and its aftermath.
He spoke as Kenya's election commission defended its electronic voting system from opposition candidate Raila Odinga's allegations that the system was hacked. Odinga says votes were manipulated in favour of President Uhuru Kenyatta, who holds a strong lead with 96% of polling stations counted.
Kerry says Kenya's leaders need to step up in the coming days and give people confidence amid fears of post-election violence.