According to reports from VnExpress, police at Haneda International Airport stopped the student on 13 June after detecting the undeclared items, which both require quarantining before entry into Japan.

After testing on both products, Japanese authorities confirmed that the fermented pork rolls were contaminated with the African swine fever virus at which point police arrested the 23-year-old at her home.

According to Tokyo Broadcasting System Television, the student had told the police that the pork rolls were for personal use but after further interrogation, she admitted that she had planned to sell the pork rolls online.

Since the first outbreak of ASF in Vietnam in February 2019, a ban on the import of pork products from the affected country was established. A certificate of safety is now required for import of any raw or processed foods into Japan and any undeclared items can result in passengers facing three years in prison or a fine of 1 million yen.

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