Deepak Malhotra and Anr. vs. State through SHO P.S. Inderpuri & Ors.
Background
The petitioners had originally lodged a police complaint that led to an FIR, which investigation later found to be false; the police filed a cancellation report, which the Magistrate accepted. However, the Magistrate also took cognizance of separate offences (giving false information, and false complaint) against the petitioners themselves and ordered them to face trial, since their original complaint had turned out to be untrue.
Decision Breakdown
The High Court upheld the part of the Magistrate's order accepting the cancellation report (i.e., agreeing the original complaint was false). But it set aside the part taking cognizance of the "false complaint" offences against the petitioners, holding that because the false allegations had also been made before a court (not only to the police), a specific legal safeguard (Section 195 CrPC) applied, meaning such a prosecution can only be launched on a complaint filed by the court itself, not directly by police on the strength of an investigation report.
Lesson Learnt
If you make a false complaint that also reaches a court (not just the police), you generally cannot be directly prosecuted by the police for that false statement: the law requires the court itself to file the complaint, a safeguard meant to prevent misuse of this offence to harass people.