Chain of custody and mandatory search safeguards under NDPS law proved fatal to the prosecution case

In an NDPS prosecution, the Court found that the prosecution failed to prove a safe and unbroken chain of custody because the CFSL form's transmission and custody were not satisfactorily shown, creating doubt about the integrity of the samples. It also held that the CFSL report could not be rejected merely for want of the scientific officer's examination because the document had been admitted without objection as to mode of proof, though its weight depended on the surrounding evidence. As prior information had triggered the search, strict compliance with the mandatory search safeguard was required; non-compliance vitiated the prosecution case and entitled the accused to acquittal.

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Issues: (i) Whether the prosecution proved an unbroken chain of custody and the safe transmission of the samples and CFSL form to establish that the recovered substance was the same material analysed by the forensic laboratory; (ii) Whether the CFSL report could be relied upon without examining the scientific officer who authored it; (iii) Whether there was compliance with the mandatory requirements of Section 50 of the NDPS Act in a case of prior information and recovery from a vehicle.

Issue (i): Whether the prosecution proved an unbroken chain of custody and the safe transmission of the samples and CFSL form to establish that the recovered substance was the same material analysed by the forensic laboratory.

Analysis: The prosecution evidence did not show that the CFSL form containing the specimen seals was deposited in the malkhana or sent along with the sealed samples to the laboratory. The entries in the malkhana register were silent on this material aspect, and there was no satisfactory evidence showing where the CFSL form remained during the intervening period. The evidence of press photographs and newspaper reports also created serious doubt whether the case property had remained intact after seizure.

Conclusion: The prosecution failed to establish a safe and unbroken chain of custody, and the recovery was rendered doubtful.

Issue (ii): Whether the CFSL report could be relied upon without examining the scientific officer who authored it.

Analysis: The report was prepared by a Senior Scientific Assistant of the CFSL, who did not fall within the categories of experts whose reports are admissible under Section 293 of the Code of Criminal Procedure, 1973. Although expert opinion is relevant under Section 45 of the Indian Evidence Act, 1872, the report had been exhibited without objection as to mode of proof. The Court held that an objection to mode of proof cannot be raised for the first time in appeal once the document has been admitted in evidence without protest.

Conclusion: The report could not be rejected on the ground of mode of proof at the appellate stage, but its evidentiary value remained dependent on the surrounding prosecution evidence.

Issue (iii): Whether there was compliance with the mandatory requirements of Section 50 of the NDPS Act in a case of prior information and recovery from a vehicle.

Analysis: The raiding party acted on prior information, making Section 50 mandatory. The FIR mentioned only the option of search before a gazetted officer, while the court testimony introduced an improved version including a Magistrate. The Court held that where an accused is physically present in a conveyance and is suspected of possessing narcotic substance, the safeguards under Section 50 must be complied with. Non-compliance affects the fairness of the search and undermines the prosecution case.

Conclusion: Section 50 was not duly complied with, and the appellants were entitled to acquittal.

Final Conclusion: The conviction could not be sustained because the prosecution failed to establish reliable custody of the samples and did not comply with the mandatory search safeguard, entitling the appellants to the benefit of doubt.

Ratio Decidendi: In prosecutions under the NDPS Act, the prosecution must establish an unbroken chain of custody for seized samples and strictly comply with mandatory search safeguards where prior information exists; failure on either count vitiates the prosecution case and entitles the accused to acquittal.

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