Why Was Another Chinese National Arrested for Smuggling Roundworms into the University of Michigan?

Synopsis
In a shocking turn of events, another Chinese national has been arrested in connection with smuggling biological materials into the United States, specifically targeting a laboratory at the University of Michigan. This incident highlights growing concerns over agroterrorism and the potential threats posed by foreign researchers in American institutions.
Key Takeaways
- Chengxuan Han arrested for smuggling biological materials.
- Biological materials included roundworms intended for research.
- Incident part of a larger agroterrorism investigation.
- Authorities emphasize national security risks.
- University of Michigan involved in the smuggling case.
Michigan, June 10 (NationPress) Another Chinese researcher has been apprehended and charged with the illegal importation of biological materials destined for a laboratory at the University of Michigan, further escalating an ongoing investigation into agroterrorism involving foreign entities.
Chengxuan Han, a Chinese national, faces accusations of smuggling roundworms into the United States and providing false information, as stated by the United States Attorney's Office for the Eastern District.
Currently, Han is a PhD candidate at the College of Life Science and Technology at Huazhong University of Science and Technology in Wuhan, China.
The federal complaint reveals that from 2024 to 2025, Han sent four packages from China to individuals associated with a laboratory at the University of Michigan.
These packages were found to contain hidden biological materials. Authorities reported that Han arrived at Detroit Metropolitan Airport on June 8, 2025, with a J1 visa.
During a customs check, Han allegedly misrepresented the contents of the packages and denied sending any biological materials to the US.
Officers from Customs and Border Protection (CBP) discovered that Han's electronic devices had been erased three days prior to her arrival.
Following the inspection, Han was questioned by FBI agents.
She confessed to sending the packages and confirmed they contained biological materials related to roundworms.
Han further admitted to providing false information during the CBP inspection.
She is set to appear in federal court in Detroit on Monday afternoon.
US Attorney Jerome F. Gorgon, Jr. stated, "The alleged smuggling of biological materials by this individual from a science and technology university in Wuhan, China, to be utilized at a University of Michigan lab, is part of a disturbing trend that jeopardizes our security."
He added, "The American taxpayer should not be funding a PRC-based smuggling operation at one of our vital public institutions."
The FBI, CBP, and US Immigration and Customs Enforcement's Homeland Security Investigations (ICE HSI) are collaboratively investigating this case.
Officials indicated that this incident is part of a larger inquiry into agroterrorism-related smuggling by Chinese researchers at American institutions.
Previously, two Chinese nationals were charged in a related case involving the smuggling of Fusarium graminearum, a biological pathogen considered a potential agroterrorism threat.
This fungus is known to cause head blight in cereal crops, leading to billions in agricultural losses.
It also produces toxins that can harm both human and animal health, resulting in vomiting, liver damage, and reproductive issues.
According to an FBI criminal complaint, Zunyong Liu, aged 34, brought the pathogen into the US in July 2024 during a visit to his girlfriend, Yunqing Jian, aged 33.
Liu later confessed to transporting the fungus for research at the same University of Michigan lab where Jian was employed.
Federal authorities uncovered electronic communications between them that confirmed their collaboration, leading to charges of conspiracy, smuggling, false statements, and visa fraud.
Investigators also found that Jian had received funding from the Chinese government for research on the pathogen and that her devices contained evidence linking her to the Chinese Communist Party.
Cheyvoryea Gibson, Special Agent in Charge of the FBI Detroit Field Office, stressed the seriousness of the case, stating that the actions of this pair posed "an imminent threat to public safety."
As worries about the implications of biological smuggling rise, US authorities continue to probe potential threats to national security, agriculture, and public health.