Speaking in the district, Naidu said how will the prime minister "protect the country if he could not preserve the coal scam files".
He also alleged rampant corruption during the regime of late Y S Rajasekhara Reddy as chief minister of the state.
Naidu also said that ongoing agitation against the proposed bifurcation of Andhra Pradesh was a "holy war", and asserted that "I am determined to avert the bifurcation".