It follows the arrest of a Vietnamese woman, carrying, what police say, were pills containing cocaine and heroin.
An Tran Thi was found with the pills while she was returning to the territory after a trip to her homeland.
She travelled via Singapore and Fiji and was arrested after she landed in Samoa on her way to Pago Pago.
The Director for Homeland Security Samana Semo Veavea told KHJ news there's a pattern of mainly Asian travellers bringing in bags of medication of a quantity clearly not for personal use.
