US federal authorities have charged two Chinese nationals with smuggling a high-risk biological pathogen into the country, triggering serious concerns over national security and the integrity of the American food supply.
The accused, 34-year-old researcher Zunyong Liu and 33-year-old Yunqing Jian, are alleged to have conspired to transport Fusarium graminearum, a toxic fungus known to devastate crops, into the United States.
According to an FBI criminal complaint, Liu smuggled the pathogen during a visit to the US in July 2024, delivering it to Jian, who was working at a University of Michigan laboratory.
The fungus, which causes head blight in crops such as wheat and barley, leads to massive economic losses and produces harmful mycotoxins that affect both human and animal health.
FBI Uncovers Conspiracy
The investigation, led jointly by the FBI and US Customs and Border Protection, uncovered digital evidence of coordination between the two suspects.
Electronic communications confirmed the deliberate transportation of the fungus for unauthorised research purposes.
Authorities have charged Liu and Jian with conspiracy, smuggling, making false statements, and visa fraud.
Authorities also allege that Jian received funding from the Chinese government for pathogen-related research and maintains an affiliation with the Chinese Communist Party (CCP).
Her devices contained substantial material linking her to the CCP, further intensifying the case’s political implications.
Top US Officials Sound Alarm
Cheyvoryea Gibson, Special Agent in Charge of the FBI’s Detroit Field Office, stated the pair’s actions posed ‘an imminent threat to public safety’.
Echoing these concerns, US Attorney Jerome F Gorgon Jr described the case as one of ‘the gravest national security concerns’, asserting that the two Chinese nationals attempted to exploit an American research institution to advance a covert biosecurity threat.
The case surfaces amidst rising US-China tensions and renewed scrutiny over foreign access to sensitive research sectors.
Secretary of State Marco Rubio recently announced stricter visa policies, especially targeting individuals affiliated with the CCP or engaged in critical research fields.
These measures aim to prevent similar incidents and safeguard national interests.
Furthermore, FBI Director Kash Patel took to the social media platform X to underscore the wider implications.
“This case is a sobering reminder that the CCP is working around the clock to deploy operatives and researchers to infiltrate American institutions and target our food supply, which would have grave consequences… putting American lives and our economy at serious risk,” he wrote.
New… I can confirm that the FBI arrested a Chinese national within the United States who allegedly smuggled a dangerous biological pathogen into the country.
The individual, Yunqing Jian, is alleged to have smuggled a dangerous fungus called “Fusarium graminearum,” which is an…
— FBI Director Kash Patel (@FBIDirectorKash) June 3, 2025
The accused individuals face a federal trial as authorities continue to investigate the extent of the potential biosecurity breach and its implications for US-China relations.
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