Notwithstanding anything contained in the Code of Criminal Procedure, 1973 (2 of 1974), no police officer below the rank,—
(a) in the case of the Delhi Special Police Establishment, of an Inspector of Police;
(b) in the metropolitan areas of Bombay, Calcutta, Madras and Ahmedabad and in any other metropolitan area, of an Assistant Commissioner of Police;
(c) elsewhere, of a Deputy Superintendent of Police or a police officer of equivalent rank,
shall investigate any offence punishable under this Act without the order of a Metropolitan Magistrate or a Magistrate of the first class, as the case may be, or make any arrest therefor without a warrant:
Provided that if a police officer not below the rank of an Inspector of Police is authorised by the State Government in this behalf by general or special order, he may also investigate any such offence without the order of a Metropolitan Magistrate or a Magistrate of the first class or make arrest therefor without a warrant:
Provided further that an offence referred to in clause (b) of sub-section (1) of section 13 shall not be investigated without the order of a police officer not below the rank of a Superintendent of Police.
Legal Commentary & Landmark Judgments: Section 17
Section 17 specifies the hierarchy of authorized senior police officers competent to investigate offences under the Act, while Section 17A establishes mandatory prior approval before conducting inquiries.
Section 17 prescribes investigative officer ranks and requires prior statutory approval under Section 17A, balancing anti-corruption vigilance with protection against malicious prosecution.
Section 17A is one of the most fiercely debated anti-corruption provisions. It seeks to balance aggressive anti-corruption enforcement with administrative decisiveness. While on-the-spot trap cases are exempt, policy decisions and discretionary clearances require prior administrative filter before an investigating agency can initiate an inquiry.