As part of the attempts to push misinformation to justify its invasion, Russia is falsely claiming that the U.S. is experimenting with "bat coronavirus" to create biological weapons in Ukraine.
Russia's armed forces claimed, without evidence, to have found proof that the Pentagon has been financing biological studies in the Eastern European country in order to carry out the "covert spread of deadly pathogens."
The speculation was presented (again, without any evidence) and arrived after Russia had already attempted to revive a years-old conspiracy that there exists U.S.-military labs in Ukraine developing germ warfare capabilities.
"According to the documents, in Ukraine, in 2022, the American side planned to conduct works on bird, bat and reptile pathogens, then subsequently proceeding to researching the possibility of them transmitting African swine fever and anthrax," Russian Defence Ministry Spokesman Igor Konashenkov told reporters, via the Russian news agency TASS.
https://www.newsweek.com/us-labs-ukraine-coronavirus-biological-weapons-russia-1686737