United Nations Secretary General, António Guterres sent congratulatory message to Kenyans for observing peace during the elections.
In a statement, he commended the electoral commission and Kenyan authorities for ensuring that voters were able to exercise freely their right to vote.
Mr Guterres has urged politicians and voters to be calm and restrained as they wait for results.
Provisional results show a tight race for the presidency between the two frontrunners – veteran politician Raila Odinga and Deputy President William Ruto, the BBC reported.
The electoral body has so far received roughly 99% of the results and has seven days to announce the results.