A Chinese researcher from Wuhan, from where Covid-19 is suspected to have spread to the world, has been arrested for allegedly trying to smuggle "biological materials" into the US in a second such incident in less than a week.
The FBI arrested Chengxuan Han, a PhD student, in Detroit for sending four parcels with "biological materials" to the US. Not much is known about the alleged content of the parcels except that it is related to roundworms.