An information that discloses a cognizable offence must be recorded as a First Information Report at the police station having territorial jurisdiction. The informant may give the information orally or in writing, and the officer in charge is bound to record it, to give a free copy of the FIR to the informant, and to forward the report to the magistrate. Attendance at the victim's own jurisdictional station is the general rule, and the fact of territorial jurisdiction is checked by the investigating officer.
The FIR is the foundation of criminal investigation, and its contents should be a plain, chronological statement of what occurred, including the date, time, place, persons involved, and property, if any, affected. Where the injury is such that the person cannot give the FIR personally, a relative, neighbour, or counsel may present it on his behalf, stating the source of the information. The informant should read the recorded Fir carefully before signing.
Common errors include giving a vague account, exaggerating facts, or omitting material particulars that later prove crucial at trial. The Fir sets the version from which the prosecution may be examined; contradictions between it and later statements damage credibility. For this reason the informant should give the fullest accurate version initially and should note the FIR number and the name of the recording officer, as these are required for follow-up.