The FBI Used a 1951 Book to Gain Insight Into an American Al-Qaeda Suspect Samir Khan. North Carolina-based Al-Qaeda blogger Samir Khan was the subject of a major FBI counter-terrorism investigation in 2009. Recently released FBI files provide rare insight into the FBI's attempts to capture Samir Khan before he traveled to Yemen. There are numerous FBI files dated February 2009 about Khan's contacts, the details of which were redacted. However, one file from February 2009 shows that an FBI counter-terrorism agent sent a report to the Charlotte FBI field office to report that the bureau's Public Access Center Unit received an anonymous tip on its "Internet Crime Complaint Center" website claiming that Samir Khan made a death threat against a Sarasota, Florida private investigator , whose name was redacted from the FBI files. A news report about the incident, however, revealed that the private investigator is Bill Warner, who allegedly was responsible for shutting ...