The FBI arrested Marc Keyser in Sacramento, California on suspicion of mailing as many as 120 packages containing a white powdery substance marked "anthrax" to media organizations, restaurants and a congressional office. The substances were tested and as of October 30, 2008, none of the contents were found to be dangerous.
Keyser was arrested on October 29, 2008. Authorities say the arrest is not connected to the the white powdery substances mailed to several banks in October 2008.FOXNews.com: FBI Warns of 'Anthrax' Letters Sent to Media Outlets (October 30, 2008)
