Former CBI interim chief M Nageswara Rao today filed an affidavit admitting that he committed "mistake" in transferring former joint director A K Sharma and apologised to the Supreme Court saying he had no intention to circumvent its orders.Rao, was responding to a contempt notice issued to him on February 7. In the affidavit, he offered unconditional and unqualified apology to the apex court....