Peterside told a news conference in Port Harcourt that the collation of the district’s election results was marred with irregularities.
He said that information available to the party showed that results of some local government areas in the district had not been collated.
Peterside, the Deputy Leader of the party in the state, also alleged that due process was not followed in announcing the results.
“You are aware that elections were inconclusive in Etche Local Government Area; the results for Emohua Local Government Area have not been collated, the results for Port Harcourt City Local Government Area were partially collated.
“The APC agent was beaten at the collation centre in Port Harcourt. Without him being present, the result was announced in favour of the PDP candidate.
“Whatever result is declared for Rivers East will be ridiculing democracy; APC will not accept any of that,” he said.
Peterside said the APC would use constitutional means to resist the alleged irregularities.