A defense motion filed in the federal case against Brian Cole Jr., charged with planting pipe bombs near the DNC and RNC headquarters on January 5, 2021, reveals that the FBI investigated a former U.S. Capitol Police officer currently employed by the CIA as a person of interest in the unsolved J6 pipe bomb mystery. According to the court document, Shauni Kerkhoff underwent a polygraph examination on November 6, 2025, during which she was asked twice whether she placed the pipe bombs. She failed both relevant questions, with the FBI examiner noting her "very controlled reaction" to the failure and "seemingly rehearsed responses."

The filing, part of discovery provided by the government, indicates the FBI opened a file on Kerkhoff, conducted surveillance, sought her CIA employment records, and issued subpoenas for her electronic communications. This occurred around the same time as intensified scrutiny of Cole, who was arrested in December 2025. While earlier reporting from CBS News highlighted that Kerkhoff had been publicly named but cleared with an alibi involving video footage of her at home with her dogs, the new court motion revives scrutiny by detailing the polygraph results and investigative steps taken against her.

This development challenges aspects of the official January 6 narrative, which has long portrayed the pipe bombs as evidence of coordinated insurrectionist violence intended to disrupt the electoral certification. Despite a $500,000 reward and years of investigation, the FBI has not publicly identified the bomber. The defense motion appears to explore alternative theories, including potential law enforcement or intelligence community connections, raising questions about whether the bombs served as a false flag or pretext element. Mainstream coverage, including from The New York Times, frames the defense strategy as adopting a debunked conspiracy theory, yet the existence of the government-produced discovery confirming the polygraph adds a layer of documented context often absent from initial reporting.

Connections to broader patterns include the FBI's history with confidential human sources on January 6 and unresolved questions about security failures at the Capitol. The transition of a Capitol Police officer to CIA employment while under investigation for this incident invites further examination of inter-agency dynamics and potential conflicts of interest in the J6 probe. Polygraph results are not admissible in court and are considered unreliable by many experts, but their inclusion in official discovery underscores that federal investigators took the lead seriously enough to administer the test.