The Office of the Narcotics Control Board (ONCB) is broadening its investigation into a transnational heroin trafficking network. This move follows the arrest of a Thai Airways flight attendant in Australia. Authorities believe the syndicate is responsible for several recent heroin seizures in Bangkok. Pol Maj Gen Suriya, the ONCB secretary-general, detailed these findings during a press briefing on Thursday. The agency is now working to uncover the full extent of the criminal operation. Investigators are focusing on the links between the international arrests and domestic drug discoveries. This expanded probe aims to dismantle the entire trafficking chain.