武汉博士生被控向密歇根大学实验室走私生物材料
美国司法部密歇根东区联邦检察官办公室2025年6月9日宣布，中国公民 Chengxuan Han 已在密歇根州韦恩县底特律市被联邦检方以刑事诉状指控，罪名是走私货物进入美国，以及向联邦官员作虚假陈述。Han 是中国武汉华中科技大学生命科学与技术学院的在读博士生，原定以访问学者身份，前往位于密歇根州沃什特诺县安娜堡市的密歇根大学一间实验室做一年研究。
诉状所附联邦调查局探员 Edward Nieh 的宣誓书称，2024年9月至2025年3月间，Han 先后寄出四个包裹，收件人是与该实验室有关联的两个人，四个包裹都没有如实申报，也没有进口生物材料所需的正确文件。第一个包裹申报为信件，里面是质粒；第二个申报为塑料盘，里面是八个装有疑似生物材料的培养皿；第三个也申报为信件，里面是质粒；第四个是一本书，书页中间夹着信封，里面是画有28个图形的滤纸，检方称图形标注与线虫研究用的质粒相对应。宣誓书说，进口秀丽隐杆线虫（C. elegans）须先取得美国农业部许可证。宣誓书还记载，Han 2025年3月18日首次申请 J-1 签证曾被拒，3月27日再次申请后获签。
2025年6月8日傍晚约6时20分，Han 持 J-1 签证从中国上海乘机抵达底特律都会机场。海关与边境保护局官员在二次检查中盘问时，她先否认寄过包裹，又把培养皿说成塑料杯，经追问后承认寄过包裹，内容有线虫生长培养基与质粒。官员还发现，她电子设备里的内容在抵美三天前已被删除。此后，她在联邦调查局与国土安全调查局探员的讯问中承认，自己寄了四个包裹，内容是她在华中科技大学实验室制备的质粒与装有线虫的培养皿，也承认在边境检查时作了不实陈述；她同时表示，两名收件人事先并不知情，她的导师与密歇根大学的教授也不知情。
联邦检察官 Jerome F. Gorgon, Jr. 表示，Han 被指从中国武汉一所科技大学走私生物材料、供在密歇根大学实验室使用，属于一个威胁美国安全的、令人警觉的模式的一部分。联邦调查局底特律外勤办公室主管特工 Cheyvoryea Gibson 等官员共同宣布了指控。本案由联邦调查局、海关与边境保护局与移民及海关执法局国土安全调查局共同调查。诉状由联邦治安法官 Elizabeth Stafford 于6月9日签署，案号为 2:25-mj-30370。检方提醒，刑事诉状只是指控，不构成有罪证据。
关联：两名中国研究人员被控走私危险真菌入美 拟在密歇根大学实验室研究
关联：密歇根大学中国留学生被控在2024年大选中非法投票 检方称其已潜逃上海
（来源：美国司法部密歇根东区联邦检察官办公室）
Wuhan Ph.D. Student Charged With Smuggling Biological Materials to a University of Michigan Laboratory
The U.S. Attorney's Office for the Eastern District of Michigan announced on June 9, 2025, that Chengxuan Han, a citizen of China, had been charged in Detroit, Wayne County, Michigan, by criminal complaint with smuggling goods into the United States and making false statements to federal officers. Han is a doctoral student at the College of Life Science and Technology of Huazhong University of Science and Technology in Wuhan, China, and had been invited to spend a year as a visiting scholar at a laboratory at the University of Michigan in Ann Arbor, Washtenaw County, Michigan.
According to an affidavit by FBI Special Agent Edward Nieh filed with the complaint, between September 2024 and March 2025 Han sent four packages to two people associated with the laboratory, none of them properly manifested and none with the documentation required to import biological materials. The first, manifested as a letter, contained plasmids; the second, manifested as plastic plates, held eight petri dishes with suspected biological material; the third, also manifested as a letter, contained plasmids; and the fourth was a book with an envelope tucked inside its pages holding filter paper drawn with 28 shapes that prosecutors said were labeled in a scheme corresponding to plasmids used in roundworm research. The affidavit said a U.S. Department of Agriculture permit is required to import Caenorhabditis elegans (C. elegans). It also recorded that Han's first application for a J-1 visa was refused on March 18, 2025, and that she was issued the visa after reapplying on March 27.
At about 6:20 p.m. on June 8, 2025, Han arrived at Detroit Metropolitan Airport on a flight from Shanghai, China, traveling on a J-1 visa. During a secondary inspection, Customs and Border Protection officers questioned her; she first denied sending packages and described petri dishes as plastic cups, then admitted she had sent packages containing nematode growth medium and plasmids. Officers also found that the content of her electronic devices had been deleted three days before her arrival. In a later interview with FBI and Homeland Security Investigations agents, she admitted sending the four packages, which contained plasmids she had prepared in her Huazhong laboratory and petri dishes of C. elegans, and admitted making false statements during the border inspection. She also said the two recipients had no advance knowledge of the shipments, and that neither her adviser nor the University of Michigan professor knew about them.
U.S. Attorney Jerome F. Gorgon, Jr. said the alleged smuggling of biological materials by Han from a science and technology university in Wuhan, China, to be used at a University of Michigan laboratory was part of an alarming pattern that threatens U.S. security. Cheyvoryea Gibson, Special Agent in Charge of the FBI's Detroit Field Office, joined in announcing the charges. The FBI, Customs and Border Protection, and Immigration and Customs Enforcement's Homeland Security Investigations are investigating the case. Magistrate Judge Elizabeth Stafford signed the complaint on June 9, as case No. 2:25-mj-30370. Prosecutors noted that a criminal complaint is only a charge and is not evidence of guilt.
(Source: U.S. Attorney's Office for the Eastern District of Michigan)
来源：美国司法部密歇根东区联邦检察官办公室
发布：GSM·美国（发布链接）
图片来源：图：位于密歇根州韦恩县底特律市的 Theodore Levin 美国法院大楼，Han 的刑事诉状在此提交。Andrew Jameson 摄，CC BY-SA 3.0，经 Wikimedia Commons。 / Photo: The Theodore Levin U.S. Courthouse in Detroit, Wayne County, Michigan, where Han's criminal complaint was filed. Photo by Andrew Jameson, CC BY-SA 3.0, via Wikimedia Commons.
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