Key legal question
Whether the factual finding that the defendant participated in packaging the heroin was arbitrary or violated the presumption of innocence and due process.
Extracted holding
The factual finding was not arbitrary and raised no serious doubt; the evidence, especially fingerprint traces and the defendant's explanations, supported participation.
Extracted reasoning
The lower court relied on extensive trace evidence and assessed the defendant's changing explanations. The Supreme Court found the reasoning plausible and not manifestly untenable.