A Group of Ministers(GoM), which was then headed by Pranab Mukherjee when he was Finance Minister, had in its report submitted to the government recommended that refusal to grant permission to CBI among others to probe a corrupt official "of the rank of Joint Secretary and above" will have to be put up to the Prime Minister. The recommendations of the GoM were accepted by the government.
Two days back, the DoPT issued a corrigendum saying the word "above the rank of Joint Secretary" should be read as "of the rank of Joint Secretary".
Under Section 6 (A) of Delhi Special Police Establishment (DSPE) Act, 1946, which provides for safeguarding senior public officials against undue and vexatious harassment by the investigating agency, CBI shall not conduct any enquiry or probe into any offence of alleged corruption against an officer of the level of JS and above.