The National Super Alliance (NASA) deputy leader Kalonzo Musyoka failed to attend his Coalition leader Raila Odingas swearing in.
Odinga arrived at Uhuru Park at around 2.40pm and shortly after, the inauguration ceremony started with brief remarks from Siaya Senator James Orengo.
Odinga's co-principals Moses Wetangula and Musalia Mudavadi were also missing forcing him to be introduced by his deputy in the ODM party Ali Hassan Joho.
The former Prime Minister then rose to the dais and quickly read out the oath as the People's President.
It is not clear why Musyoka did not make it to the controversial oath ceremony.
However, the NASA leader defended his deputy's absence saying the Wiper Leader was held up by an undisclosed development.