The information and broadcasting minister said the Central Bureau of Investigation was doing its duty and acting in accordance with the mandate given to it by law.
"What is political vendetta? Where is BJP in this? I am not able to understand. Do you mean to say that anybody against whom any charge is there, it should not be inquired into at all?" Mr Naidu asked.
"CBI is doing its duty and it is allowed to do so. Earlier it was not allowed... after our government came there is no interference and that is why CBI is free and acting as per the mandate given to it...," he told reporters.
It is alleged that Mr Yadav as railway minister handed over the maintenance of two railway hotels to a company after receiving a bribe in the form of prime land of three acres through a benami company.
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