It's known that the IB has been keeping tabs on all ministers and senior civil servants. The best example is how a Minister's aide was caught asking for a commission from a newspaper which was issued ads from public sector units under the ministry. The IB found that the aide was conducting this racket with the approval of a member of the Minister's household. The PM was duly informed of the facts. And then NaMo is said to have pulled the minister so badly he broke down in tears.