Union Defence Minister Nirmala Sitharaman has alleged that eminent leaders of congress party are involved in Punjab National Bank scam.Mrs Sitharaman said, Congress needs to answer instead of making allegations against BJP.She said, Congress party is misleading people on the entire issue. She said, the original sin in this particular episode was committed in 2011.BJP leader also said, fire star diamond international private limited, which is one of the companies of Nirav Modi, was acquired from Adwait Holdings and one of its shareholders was Anita Singhvi since 2002.