Section 21. Persons likely to be prejudicially affected to be heard.

If, at any stage of the proceeding, the Lokpal— (a) considers it necessary to inquire into the conduct of any person other than the accused; or (b) is of opinion that the reputation of any person other than an accused is likely to be prejudicially affected by the preliminary inquiry, the Lokpal shall give to that person a reasonable opportunity of being heard in the preliminary inquiry and to produce evidence in his defence, consistent with the principles of natural justice.