"There is no conflict of interest at all because Advaniji has not taken any name. I have gone through his statement very carefully. It is very clear that Prime Minister Manmohan Singh is answerable to the nation. He has failed, therefore we have every right to question him. But no personal criticism should be made," Naidu said.

"But yes, there can be criticism of his performance. Prime Minister is accountable to the nation," he said.

On Thursday, Modi had challenged Singh for a public debate on governance and slammed him for India's "weak and feeble" response to provocations from Pakistan and China.

(Agencies)

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