U.S. Secretary of Defense Mark Esper accused China Thursday of “misleading” the world on the origins of the novel coronavirus, and being opaque in its messaging.

Asked during a televised interview if it is possible the novel coronavirus came from a Chinese laboratory, Esper said “the results are inconclusive.”

“This is something we have been watching now for some time,” he said on the Today program. “We do know one thing, if the Chinese government, the party, had been more transparent earlier, it would have helped us in terms of staying ahead of this virus, being able to understand

Read more: US: Esper accuses China of 'misleading' world on virus