The Delhi Special Police Establishment Act lays down

Solution

Section 6A. Approval of Central Government to conduct, inquiry or investigation.— (1) The Delhi Special Police Establishment shall not conduct any inquiry or investigation into any offence alleged to have been committed under the Prevention of Corruption Act, 1988 except with the previous approval of the Central Government where such allegation relates to— (a) the employees of the Central Government of the level of Joint Secretary and above; and (b) such officers as are appointed by the Central Government in corporations established by or under any Central Act, Government companies, societies and local authorities owned or controlled by that Government.