Mr Sheriff Oborevwori polled 360,234 votes to defeat his closest opponent, Ovie Omo-Agege of the APC, who scored 240,229.
The meeting took place at Rivers State Government House and pictures circulated showing Mr Wike and his guest exchanging a handshake.
Mr Kwankwaso did not clarify the status of the ongoing talks, and expressed little optimism that they will work out ahead of the final nomination deadline in a few weeks.
His ambition has been dismissed as unserious because he has no practical political base to win a presidential election in a multi-ethnic and multi-religious country like Nigeria.
The former Anambra governor attended the National Integrity Summit in Abuja on Saturday.
Godswill Akpabio also collected a senatorial ticket from an ally in a similar placeholder arrangement like Mr Umahi and other politicians.
The former aide said he decided to abandon his campaign on personal grounds.
The Dean of Students Affairs in the university declined comments on the issue saying it was an internal issue that would be resolved amicably.
He was also accused of railing against Igbos allegedly “dominating” the Benin Catholic Diocese, with “Most Revd. Akubueze” appointed its bishop.
At least two more soldiers were still missing in action as of Thursday afternoon, an official said.
