Mr Tinubu said his opponents “have no iota of honesty in them” and speak without facts.
The opposition PDP candidate said the president on two occasions promised to leave a legacy of “free, fair and credible polls”.
Mr Okupe was found guilty of accepting a N200 million cash bribe from former NSA Sambo Dasuki, meant to purchase weapons to combat the Boko Haram insurgency.
Mr Dewu gave the advice while inaugurating some renovated facilities at the Nigeria Navy Ship (NNS) Pathfinder base in Port Harcourt.
According to the communique, the MDCAN proposed retirement age for health workers from 60 to 65 years while that of medical and dental consultants to 70 years.
Obi is the youngest compared to Messrs Abubakar, Tinubu and Kwankwaso.
Speculations are rife that the former president might be supporting Peter Obi of the Labour Party for the 2023 election.
The APC candidate listed those to be eliminated as “violent kidnappers, killers, all trouble makers.”
“The IPOB issue in the South-East, as far as I am concerned, is about the realisation of Biafra. Is it possible for Biafra to be realised today?”
The president said his regime “will continue to confront all forms of banditry, criminality, terrorism and insurgency in the land.”
