Two researchers employed at a U.S. government laboratory have been charged after federal authorities accused them of attempting to bring biological materials, including vials containing deactivated mpox virus, into the United States without proper declaration.
Prosecutors allege the researchers provided false information to customs officials when questioned about the contents of their luggage upon arrival from Africa. The case has attracted national attention because of the nature of the materials involved and the researchers’ positions at a high-security laboratory.
Researchers Charged in Alleged Mpox Smuggling Case
Federal prosecutors announced charges against Vincent Munster, 53, of the Netherlands, and Claude Kwe, 38, of Cameroon.
According to the U.S. Attorney’s Office for the Eastern District of Michigan, both men have been charged with conspiracy to smuggle biological materials into the United States and making false statements to federal law enforcement officials.
Authorities allege the pair attempted to transport multiple biological samples through Detroit Metropolitan Airport without following required procedures.
If convicted, each defendant could face up to five years in federal prison.
Both Worked at High-Security Research Facility
At the time of the alleged incident, Munster and Kwe were employed by the National Institutes of Health at the Rocky Mountain Laboratories in Hamilton, Montana.
According to federal authorities, Munster served as Chief of the Virus Ecology Section’s Laboratory of Virology, while Kwe worked as a research fellow.
Their research reportedly focused on emerging viral pathogens and how viruses spread between animals and humans.
The laboratory where they worked operates at Biosafety Level 4, which is the highest level of laboratory security used for the study of dangerous infectious diseases.
Facilities operating at this level follow strict safety procedures designed to prevent accidental exposure and protect public health.
Airport Inspection Leads to Investigation
The alleged incident occurred on January 25, 2026, when the researchers arrived at Detroit Metropolitan Airport after travelling from Brazzaville in the Republic of Congo.
According to prosecutors, there was an active mpox outbreak in the region at the time of their visit.
Customs and Border Protection officers reportedly became suspicious after noticing the pair carrying a large black plastic case.
When questioned about the contents of their luggage, authorities allege the researchers stated that the containers held diagnostic and testing equipment.
Federal investigators later examined the luggage more closely.
Authorities Discover More Than 100 Vials
During the inspection, investigators reportedly found 113 vials stored inside Styrofoam coolers.
Laboratory testing later determined that several of the vials contained biological materials.
According to prosecutors, 17 vials contained deactivated mpox virus samples, one vial contained the chickenpox virus, and two vials contained human DNA.
Authorities have not alleged that any active mpox virus was discovered among the samples.
The materials were reportedly seized as part of the investigation.
Prosecutors Allege False Statements Were Made
Federal authorities claim that the researchers failed to properly disclose the biological materials they were transporting.
Investigators allege the pair falsely described the contents of their luggage when questioned by customs officers and federal agents.
Prosecutors argue that accurate declarations are required when transporting biological materials across international borders, particularly when the items involve infectious disease research.
The charges focus on the alleged concealment of the materials and the statements made during the inspection process.
Officials Call Allegations Serious
Several federal agencies involved in the case issued statements highlighting the seriousness of the allegations.
Officials from the U.S. Attorney’s Office, the FBI, and the Department of Health and Human Services Office of Inspector General emphasised the importance of following laws and regulations governing biological materials.
Authorities stated that scientific credentials and professional status do not exempt individuals from complying with federal laws related to transportation and importation requirements.
Investigators also stressed that biological materials must be transported under strict regulatory oversight to ensure public safety.
Understanding Mpox
Mpox is a viral disease that can spread through close contact with infected people or animals.
The virus was first identified in 1958, while the first confirmed human case was reported in 1970 in what is now the Democratic Republic of the Congo.
Although mpox can cause illness, severe cases are relatively uncommon, and most infected individuals recover with appropriate medical care.
Preventive measures include vaccination, avoiding contact with infected individuals, and isolating when symptoms are present.
In 2022, the World Health Organization officially changed the virus’s name from monkeypox to mpox in an effort to reduce stigma and discrimination associated with the previous terminology.
Legal Process Continues
At this stage, Munster and Kwe have been charged but have not been convicted of any offence.
Federal prosecutors will be required to present evidence supporting the allegations in court, while the defendants will have the opportunity to challenge the charges.
Authorities have not publicly disclosed whether either researcher has retained legal representation.
The case is expected to move through the federal court system in the coming months.
