The National Secretary, Dipo Olayoku, issued a statement on Monday in Abuja.
Olayoku said an emergency meeting of the National Working Committee (NWC) discussed some publications against Kwankwaso.
The spokesman noted that the NNPP discovered that some media reports were sponsored against the party.
Olayoku said that other political parties and their candidates had made the NNPP candidate their target using the press.
“The report alleged that a chieftain of the party is a mole, working for another party and its presidential candidate.
“According to the report, this has placed the chieftain against Senator Rabiu Kwankwaso.
“We consider these reports as the handiwork of fifth columnists who have been trying to cause disaffection in the party. They will never succeed”, the statement added.