if any offence has been committed FIR should be lodged immediately
delay in lodging FIR does weaken your case
3) Mere delay in institution of an FIR may not prove fatal to the case of the prosecution if there is some kind of reasonable explanation in registration of FIR after such an inordinate delay.
4) In the case of Apren Joseph alias Current Kunjukunju & Ors. v. The State of Kerala, AIR 1973 SC 1, the Supreme Court stated the principle that it is always better that the FIR is recorded before there is time and opportunity to embellish or before the informant' s memory fades. Undue or unreasonable delay in lodging the FIR therefore inevitably gives rise to suspicion which puts the court on guard to look for the possible motive and the explanation for the delay and consider its effect on the trustworthiness or otherwise of the prosecution version. Effect of delay in lodging the FIR would always depend on the facts and circumstance of a given case.