Mr Odinga boycotted the re-run of the presidential election last week because he said no reforms had been made to the Independent Electoral and Boundaries Commission (IEBC) after the Supreme Court found irregularities and illegalities in the original poll.

Turnout for the vote was just under 39%.

He said elections in Kenya "risk becoming coronation rituals".

He announced he is launching a "people's assembly" which would include a task force investigating the "continuing failure in electoral bodies". Mr Odinga also took a stab at Kenyan President Uhuru Kenyatta, who won last week's poll with 98% of the vote, and Deputy President William Ruto, saying: "We will not allow two megalomaniacs to destroy freedom and democracy."