Senator Dino Melaye, the Spokesperson of the Peoples Democratic Party Campaign Organisation with some other party agents have walked out of the collation centre in Abuja.
Melaye said the Independent National Electoral Commission (INEC) is compromised.
Dino had earlier threatened that the PDP would reject the result of the 2023 presidential election.
Shettima's call for unity and compassion resonated with participants, as he framed peace as a security necessity and a prerequisite for economic development.