By Marc Santoro and William K. Rashbaum, New York Times, March 8, 2013

Sulaiman Abu Ghaith, a son-in-law of Osama bin Laden who once served as a spokesman for Al Qaeda, pleaded not guilty at his arraignment in federal court in Manhattan on Friday morning, where he was charged with conspiracy to kill Americans.

John P. Cronan, one of the prosecutors, said in court that Mr. Abu Ghaith made extensive comments to law enforcement officials after his arrest. He referred to a 22–page document, which was not released publicly, that detailed his statements. Mr. Cronan also referred to audio recordings of statements Mr. Abu Ghaith made to foreign authorities, some of which he said still need to be translated.

The appearance of Mr. Abu Ghaith before Judge Lewis A. Kaplan of United States District Court in the cavernous ceremonial courtroom in Lower Manhattan, only blocks from the site of the 9/11 terror attack, was fraught with symbolism, even as the details of both his role in Al Qaeda and his arrest remained unclear [....]

Also see:

Document: Official Indictment Against Sulaiman Abu Ghaith (PDF)

Background, from yesterday:

Bin Laden Relative With Qaeda Past to Have New York Trial

Background, from Oct. 9, 2001:

Bin Laden Spokesman Threatens More Strikes