Abubakar said this at the launch of his North East campaign for 2023 poll in Maiduguri on Wednesday.
The former PDP chairman, Vincent Ogbulafor, died on Friday at the age of 73.
Mr Onanuga’s attack on the PDP comes on the heels of the controversial sums paid into the bank accounts of some members of the party’s National Working Committee.
Mr Shekarau joined the NNPP in May after defecting from the All Progressives Congress.
“It is more of a consultative meeting on matters concerning the way forward,” Mr Tambuwal said.
“I believe that it is the NEC that has the statutory rights to release the content of what we have done.”
The opposition party said the electoral office should confirm Iduma Igariwey, a serving member of the House of Representatives, as the new governor.
Shuaibu Lau would replace Emmanuel Bwacha, who has defected to the All Progressives Congress.
He died of COVID-19-relates illness, the party said.
Garba Shehu has criticised PDP governors for being anti-Buhari, describing them as greedy, profligate, and unfit to rule Nigeria “any time soon.”
