Defective sampling and evidentiary inconsistencies can defeat narcotics convictions when identity of contraband is not proved beyond reasonable doubt.

Mixed sampling of contraband from nine separate packets before drawing representative samples undermined the integrity and identity of the recovered substance, because it prevented verification that each packet contained heroin and prejudiced the accused. Material inconsistencies in the prosecution evidence regarding consignor and consignee details, non-seizure of supporting documents, and discrepancies in the colour, smell, texture, and weight of the seized material further weakened the case. On these defects, the prosecution failed to prove guilt beyond reasonable doubt in a serious narcotics matter, and the accused was entitled to the benefit of doubt.

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Issues: Whether the conviction could be sustained when the sampling process was defective and the prosecution evidence contained material discrepancies, creating reasonable doubt about the alleged recovery and the nature of the contraband.

Analysis: The alleged substance from nine separate packets was mixed together before sampling, instead of drawing samples from each packet individually. This made it impossible to determine whether all packets contained heroin and caused prejudice to the accused. The prosecution case was further weakened by unexplained omissions regarding the consignor and consignee details, non-seizure of supporting documents, and significant inconsistencies in the evidence concerning the colour, smell, texture, and weight of the seized material. In view of these defects, the prosecution failed to establish guilt to the required standard in a serious narcotics case.

Conclusion: The conviction could not be sustained; the accused was entitled to the benefit of doubt and the appeal was allowed.

Ratio Decidendi: Where seized contraband from multiple packets is mixed before sampling and the prosecution evidence contains material inconsistencies affecting the identity and integrity of the recovered substance, the prosecution fails to prove the charge beyond reasonable doubt and the accused is entitled to benefit of doubt.

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