Kerkhoff, who now works for the CIA, was interviewed by the FBI on Nov. 6 and underwent a polygraph examination in which she was asked directly whether she had placed the pipe bombs. She was formally named as a person of interest on Nov. 7, according to the filing. The defense notably claimed that she failed the polygraph test, with an examiner noting her “very controlled reaction” and “seemingly rehearsed responses.” · After the bureau opened its investigation, the FBI issued subpoenas tied to her electronic accounts, interviewed her associates, and reviewed surveillance footage related to her movements, according to the filing. Former FBI Deputy Director Dan Bongino, who was lauded by ranking department officials, including Attorney General Pam Bondi, for his work in identifying Cole as the suspect shortly before his departure from the bureau, did not divulge that Kerkhoff was investigated and pushed back on a report last year that named Kerkhoff as a potential suspect.