Amid sirens and heightened security, the man who allegedly masterminded the 2012 Benghazi attack is whisked away, to an undisclosed location to await his criminal prosecution on U.S. soil.<br/> <br />Ahmed Abu Khatallah made his first court appearance on Saturday at a U.S. District Court in Washington, just a few blocks away from the U.S. Capitol.<br/> <br />He was charged with conspiracy to provide "material support to terrorists resulting in deaths," in connection with the attack that killed four Americans including Ambassador Chris Stevens.<br/> <br />The Libyan militia leader appeared before Magistrate Judge John Facciola.<br/> <br />He was unshackled and kept his hands behind him as he gave answers through an interpreter.<br/> <br />He pleaded not guilty to the terrorism charges.<br/> <br />The federal charges were filed against him in July of 2013 but were kept under court seal until this month.<br/> <br />Earlier in the day, Khatallah was transferred into civilian law enforcement custody from a US Navy warship.
