FBI Director Kash Patel confirmed on June 3 the arrest of two Chinese nationals in the US for allegedly attempting to smuggle a dangerous biological pathogen into the country.
Kash Patel announced on X, “Breaking: I can confirm the FBI has arrested a Chinese national in the US for allegedly smuggling a dangerous biological pathogen into the country.”
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
Patel explained that Yunqing Jian is accused of smuggling Fusarium graminearum, a dangerous fungus classified as an agroterrorism agent, into the US for research at the University of Michigan, where she is employed. This fungus causes “head blight,” a disease affecting wheat, barley, maize, and rice, and poses serious health risks to both humans and livestock. It is linked to billions of dollars in global agricultural losses annually.
The FBI director added that evidence indicates Yunqing Jian received funding from the Chinese government for similar pathogen research in China and had expressed allegiance to the Chinese Communist Party.
Patel stated that Jian’s boyfriend, Zunyong Liu—also named in the complaint—conducts research on the same pathogen at a university in China. Liu initially denied, but later admitted, to smuggling Fusarium graminearum into the US through Detroit Metropolitan Airport to carry out research at the University of Michigan.
Both Jian and Liu face charges of conspiracy, smuggling goods into the US, making false statements, and visa fraud. Patel called the case a clear warning that the CCP is using operatives and researchers to infiltrate American institutions and threaten the nation’s food supply, putting American lives and the economy at risk. He added, “The FBI will remain vigilant in combating these threats. Our @FBIDetroit team did outstanding work alongside @CBP. Justice will be served.”
Rising Trade Tensions Between China and the US
This development unfolds amid continuing trade disputes between China and the US. On June 2, China’s commerce ministry strongly denied US President Donald Trump’s accusations that Beijing violated an agreement to cut tariffs reached during talks in Geneva, Reuters reported.
The Chinese ministry called Trump’s claims “groundless” and rejected the “unreasonable accusations” regarding the tariff rollback deal agreed upon by Trump and Xi Jinping during the trade war.
Beijing also accused the US of imposing unilateral discriminatory measures, including new AI chip export controls, restrictions on chip design software sales to China, and revoking visas for Chinese students.
Last week, Trump announced on TruthSocial that he would no longer be “Mr. Nice Guy” with China, accusing them of violating the trade deal without specifying the exact breach. Later, during an Oval Office briefing, Trump said he plans to speak with Xi Jinping to find a resolution to the dispute.
