(THINKPROGRESS.ORG) — Joe Arpaio, the Arizona Sheriff who has drawn the interest of Republican presidential candidates and federal criminal prosecutors alike, revealed the results of his months-long investigation into President Obama’s birth certificate today and concluded that the document is most likely forged. The Maricopa County Sheriff even has a “person of interest,” though he refused to reveal the name. “A fraud has been committed,” Arpaio’s volunteer chief investigator warned. “The document is fake.”

In a lengthy and delirious press conference that relied on a mix of pseudo-science and innuendo, Arpaio and his dower band of volunteer investigators rolled out a series of films that depict documents being Xeroxed and scanned into Adobe software to supposedly show that someone forged Obama’s birth certificate. “This is serious. This is very serious,” the investigator said. The probe was apparently also aided by serial fabulist Jerome Corsi, of the birther-obsessed website WorldNetDaily.

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