H.N. Rishbud v. State of Delhi

Facts

The accused were investigated for offences under the Prevention of Corruption Act by officers allegedly not legally authorised to investigate without the requisite order, contrary to the statutory requirement. The accused contended that the defective investigation rendered the subsequent cognizance and trial void. The question reached the Supreme Court.

Issues

• Whether a defect or illegality in the investigation invalidates the cognizance taken and the resulting trial.
• Whether investigation in accordance with the Code is a condition precedent to a valid trial.

Arguments

The accused argued that compliance with the statutory investigation requirements was mandatory and any breach went to jurisdiction, vitiating cognizance and trial. The prosecution argued that an irregularity in investigation is curable and does not affect the competence of the court to try the case absent prejudice.

Held

The Court held that while investigation in accordance with the Code is normally a necessary preliminary to a trial, a breach of the statutory provisions governing investigation is an irregularity that does not, by itself, vitiate the trial. The proper course where such a defect is brought to notice before trial is for the court to direct re-investigation or a fresh investigation. But once the trial has commenced or concluded, an illegality in the investigation cannot upset the conviction unless it is shown to have caused prejudice or a failure of justice, the defect being curable under S465 (old S537).

Ratio decidendi

A defect or illegality in investigation, however serious, does not vitiate the resulting cognizance, trial or conviction unless it is demonstrated to have caused prejudice to the accused or a failure of justice.

Significance

The leading authority on the consequences of defective investigation, distinguishing irregularity from illegality going to jurisdiction. It is consistently applied to reject challenges to convictions based merely on investigative lapses and survives under the BNSS curative provision (S510).

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