The Chinese national says she sent an estimated five to 10 packages but some were lost in transit.
U.S. prosecutors have charged another Chinese national for smuggling biological materials into the United States and lying about the scheme.
Han Chengxuan, a PhD candidate from Wuhan in central China, was arrested upon landing at the Detroit Metropolitan Airport on June 8. An FBI agent said authorities had intercepted four packages of biological materials that Han allegedly sent to members of a University of Michigan laboratory.
She was the third Chinese national charged in a week for smuggling materials for biological research. The previous two, accused of smuggling a crop-killing fungus, include a postdoctoral fellow at the University of Michigan’s Molecular Plant-Microbe Interaction. The criminal complaint said Han was a Chinese Communist Party member who has shown loyalty to the Party.
The complaint said Han admitted to shipping an estimated five to 10 packages, but several were lost in transit. She said that her professors at both the Chinese and U.S. universities, as well as the recipients, had no knowledge of what she sent, characterizing them as a “surprises,” according to the FBI agent.
The packages contain neither the correct documentation nor the permit required for importing roundworm-related materials, the complaint noted.
The shipments allegedly went to two recipients: one active member of the lab and another among the faculty and staff at the Life Sciences Institute at the University of Michigan.
Han initially lied to the customs agents at the airport about the content of the packages, claiming they were plastic cups and a book, according to a court filing. Pressed, she admitted that the packages contained petri dishes of nematode growth medium for growing roundworms, as well as small circular DNA molecules called plasmids in an envelope, the FBI agent said.
Han, who is studying at the College of Life Science and Technology in the Huazhong University of Science and Technology, arrived on an exchange visitor visa; she has an offer letter presenting her as a visiting scholar to the Michigan lab, according to prosecutors. Han told the FBI that she was coming to the University of Michigan for one year for her research on roundworms.
By Eva Fu
