"At the national level, BJP is demanding a Joint Parliamentary Committee probe into the 2G Spectrum scam while in Karnataka its own Chief Minister is involved in corruption and party`s National President is terming the action of Yeddyurappa as ignorance and not illegal," Karat said.
"The BJP leadership has to answer as to how it can differentiate between corruption of 2G Spectrum and Yeddyurappa being involved in corruption and nepotism," he told reporters here.
BJP had "no credibility" to talk about corruption of any other political party since its own leaders were involved in "illegal acts", he said.
He termed the Somasekhara Commission`s report on attacks on churches in the state as "complete whitewash".
Karat alleged that the BJP had failed to protect the interest of minorities by giving a clean chit to "those involved in the attacks and were identified".
He demanded that the UPA Government come out with a food security legislation in the wake of spiralling prices of essential commodities.