The FBI was tipped off in April 2020 to gain-of-function virus research in China, funded by the agency formerly headed by Dr. Anthony Fauci, that “would leave no signature of purposeful human manipulation,” emails from agents at the bureau show.

At least one FBI agent at the bureau’s Newark Field Office referred to the revelation as “alarming.”

Another agent called the tip “interesting,” and vowed to follow-up with others at the FBI.

The five-pages of emails were obtained by conservative watchdog group Judicial Watch via a Freedom of Information Act request and released Friday.