Police in Gyeongnam say an intercity-bus luggage service was used to distribute methamphetamine to destinations around Korea. Investigators arrested 10 people, including alleged sellers, suppliers and users, and regional reporting says seven were detained. The case is notable because ordinary unaccompanied baggage delivery was allegedly used as a low-friction logistics network for drugs. That turns the story from a routine narcotics arrest into a transport-security issue. The next question is whether bus terminals or operators tighten identity checks and tracking for unaccompanied packages after police identified the method.