Cr.P.C Section 157

Procedure where cognizable offence suspected.

(1) If, from information received or otherwise, an officer in charge of a policestation has reason to suspect the commission of an offence which he is empowered under section 156 to investigate, he shall forthwith send a report of the same to a Magistrate empowered to take cognizance of such offence upon a policereport, and shall proceed in person, or shall depute one of his subordinate officers [not being below such rank as the [Provincial Government] may, by general or special order, prescribe in this behalf] to proceed, to the spot, to investigate the facts and circumstances of the case, [and, if necessary, to take measures] for the discovery and arrest of the offender:

Provided as follows :__
(a) Where local investigation dispensed with. when any information as to the commission of any such offence is given against any person by name and the case is not of a serious nature, the officer in charge of a policestation need not proceed in person or depute a subordinate officer to make an investigation on the spot;
(b) Where policeofficer in charge sees no sufficient ground for investigation. if it appears to the officer in charge of a policestation that there is no sufficient ground for entering on an investigation, he shall not investigate the case.

(2) In each of the cases mentioned in clauses (a) and (b) of the proviso to subsection (1), the officer in charge of the policestation shall state in his said report his reasons for not fully complying with the requirements of that subsection, [and, in the case mentioned in clause (b), such officer shall also forthwith notify to the informant, if any, in such manner as may be prescribed by the [Provincial Government], the fact that he will not investigate the case or cause it to be investigated.]