Chain of custody and seal integrity must be proved strictly in seized-sample prosecutions; acquittal upheld.

In an opium prosecution, the Supreme Court held that the prosecution must affirmatively prove an unbroken chain of custody and the integrity of seals from seizure to analysis. Because the movement of the samples through several hands was not fully accounted for and material witnesses were withheld, the possibility of tampering or substitution remained open. Late additional evidence could not cure these evidentiary gaps, as the burden rested on the prosecution to prove its case at trial. The failure to establish that the seized opium sent to the public analyst was the same material proved fatal, and the acquittal was upheld.

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Issues: Whether the prosecution proved an unbroken chain of custody for the seized samples and established that the seals remained intact until the samples reached the public analyst.

Analysis: The prosecution failed to account for the movement of the samples through several hands and did not examine all material witnesses who could have proved that the seals remained intact throughout transit. The omission left open the possibility of tampering or substitution. The attempt to introduce additional evidence at a late stage could not cure the defect, since the burden lay on the prosecution to prove its case fully at trial and not to fill material gaps later.

Conclusion: The prosecution did not prove beyond reasonable doubt that the seized opium was the same material sent to the public analyst, and the acquittal was upheld.

Ratio Decidendi: Where the prosecution relies on seized samples, it must affirmatively prove an unbroken chain of custody and the integrity of seals throughout transit; failure to do so is fatal to the charge.

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