The FBI released a large batch documents related to its investigation into Clinton’s private email server Friday afternoon. The files include notes from interviews with several top Clinton aides, including longtime adviser Huma Abedin.

The FBI said in its notes from an Abedin interview that the address on a Clinton email chain “is believed to be a pseudonym used by the President.”

Abedin said she didn’t recognize the name and “expressed her amazement” that Obama used a pseudonym.

The FBI said she exclaimed: “How is this not classified?”