Source: 9/11 Mastermind to NYC for Trial

This could be security issue. It is also going to be a circus. I'm not sure I understand why he couldn't be tried under a military court.

in reference to:

"An Obama administration official says accused Sept. 11 mastermind Khalid Sheikh Mohammed and four other Guantanamo Bay detainees will be sent to New York to face trial in a civilian federal court. The official tells The Associated Press that Attorney General Eric Holder is scheduled to announce the decision later Friday morning. The official is not authorized to discuss the decision before the announcement, so is speaking on condition of anonymity."
- Source: 9/11 Mastermind to NYC for Trial - CBS News (view on Google Sidewiki)