Opposition parties, including the Social Democratic Party and the Peoples Democratic Party, had demanded that the governor transmit power to his deputy in line with the provisions of the Constitution due to his health challenges.
He said he was only summoned to appear before the anti-graft agency over a petition from a group aiming to tarnish his reputation.
Sources at the parliament claim the circulated letter is fake despite bearing the signature of the speaker which Today Politics could not authenticate.
Operatives of the anti-graft commission were not allowed access into the facility which had an armoured tank stationed in front of it.
Mr Iwuanyanwu and his group thereafter separately issued disclaimers, saying the remarks attributed to him were fake and misrepresented.
While urging his supporters to remain calm, Governor Adeleke vowed to appeal the judgement at the Court of Appeal, insisting he remains the rightful winner of the July 16, 2022 election.
Justice Kume held that the governorship election was not held in compliance with the Electoral Act.