"The criminal law of the Republic of Kenya stipulates that sort of process is high treason".
"I reiterate the any attempts to swear in any person as president other than the one elected in line with the constitution and in a manner provided for in the law is unlawful, illegal null and void ab initio", Prof Muigai told journalists at the State Law office in the capital Nairobi.
The Attorney General now says the Jamhuri Day-scheduled event would be treasonable which is punishable by death as it seeks to form a parallel government.
Muigai said people's assemblies proposed by the National Super Alliance, Odinga's opposition coalition, were illegal as well. "The persons involved in their creation are involved in extra-constitutional activity and may be visited by the full force of the law", he said. "The swearing-in of any person not declared by IEBC, and who did not win the election, is unacceptable", the chief government legal officer said in a press on Thursday, December 7.
At the same time, the AG warned the 11 counties that have passed people's assembly motion, saying they committed illegalities.
Kenya's opposition leader has rejected USA advice to cancel a planned mock inauguration of him as president, saying he does not recognise the legitimacy of President Uhuru Kenyatta.
Odinga successfully challenged Kenyatta's August re-election but then boycotted a rerun vote in October, demanding electoral reforms.
"Our friends can give us advice.in privacy. Which constitution, my foot", Odinga told reporters in Nairobi.