Wray's comments Tuesday came after Baier noted that the Energy Department had cited the FBI's earlier findings in its report.
A Chinese Foreign Ministry spokesperson, Mao Ning, said earlier Tuesday that China has "always been open and transparent" about Covid.
In its assessment, the Energy Department also described the "likely" laboratory-related leak as an "accident," the official added.
The Energy Department is one of 18 government departments and agencies that make up the U.S. intelligence community.
Sen. Tim Kaine, D-Va., said, "China obviously is very threatened by this," but "the lab leak story is not anti-Chinese.