Western officials, researchers cast doubt on China lab virus leak theory

Chairman of the US Joint Chiefs of Staff Mark Milley said  that "we don't know" where the coronavirus originated.

"Did it come out of the virology lab in Wuhan, did it occur in the wet market there in Wuhan or did it occur somewhere else? And the answer to that is we don't know," the top US military officer told reporters in a Pentagon briefing when asked about the origin of COVID-19.

"Various agencies both civilian and US government are looking at that," he added.

Milley said that the weight of evidence indicated the coronavirus was "natural and not manmade" and was "probably not intentional."