Detroit, MI — Charges have now been dismissed against three Chinese research scholars tied to the University of Michigan months after their arrests were publicly framed as a national security case involving smuggled biological materials and an attempted flight from the United States.
New Media Detroit originally reported on November 6, 2025, that Xu Bai (28), Fengfan Zhang (27), and Zhiyong Zhang (30) were arrested by federal agents after allegedly attempting to flee the country while under investigation. At the time, prosecutors said the men conspired to secretly import biological samples from Wuhan, China, while working inside the Shawn Xu laboratory at the University of Michigan under J-1 exchange visas.
According to federal investigators, Bai and Fengfan Zhang received multiple concealed shipments between 2024 and 2025 from Chengxuan Han, a Ph.D. student at Huazhong University of Science and Technology. The materials contained roundworms used in research. Han later pleaded no contest to smuggling and making false statements and was deported.
When the University of Michigan launched an internal investigation into the Xu lab, federal records state the three men refused to cooperate, skipped mandatory meetings, and were terminated, making them eligible for removal by Homeland Security.
Then came the airport scramble.
Court filings show the trio initially purchased one-way tickets from Detroit Metro Airport to China for October 20, 2025. As federal agents began searching for them, they rebooked those flights to October 15, then purchased new tickets out of JFK Airport in New York for a 2:00 a.m. October 16 departure. When they failed to appear for their Detroit flights, investigators determined they had likely traveled east. Federal agents intercepted them at JFK during inspection.
Prosecutors alleged Zhiyong Zhang lied to Customs and Border Protection officers about his relationship to Han, while Bai and Fengfan Zhang admitted receiving packages even after Han’s arrest and removal from the United States.
At the time of the arrests, federal officials struck a very different tone than the one surrounding the case today.
“At some point, pattern becomes practice,” then-U.S. Attorney Gorgon said in a public statement. “These three men are part of a long and alarming pattern of criminal activities committed by Chinese nationals under the cover of the University of Michigan. This is a threat to our collective security.”
Acting ICE Director Todd M. Lyons added that the case underscored vulnerabilities within foreign student and exchange visitor programs and warned of potential national security risks.
The investigation was led by ICE Homeland Security Investigations, the FBI Detroit Field Office, and U.S. Customs and Border Protection.
Fast forward several months.
On February 5, 2026, the Department of Justice requested dismissal of the charges. A federal judge granted the motion. Defense attorneys say the Chinese government intervened through its Chicago consulate and that “serious talks” took place between U.S. and Chinese officials. Prosecutors have declined to comment on China’s role in the sudden reversal.
Defense attorneys now argue the materials were harmless laboratory worms and that the labeling issue was about avoiding inspection delays, not concealing dangerous pathogens. The three scholars have since returned to China without convictions.
The contrast is stark.
Last fall, the case was publicly presented as part of a broader national security threat involving foreign nationals, biological materials, and attempted flight from U.S. jurisdiction. Today, it ends not with a trial, not with a plea, but with dismissal following diplomatic engagement.
If the case was a threat to “collective security,” as originally stated, why was it dropped?