The five men accused of plotting the September 11th attacks appeared in front of a military tribunal Saturday in Guantanamo Bay Cuba.
But instead of answering when the judge asked them questions, they remained silent.
The five are charged with seven counts stemming from the 9/11 attacks including hijacking and terrorism.
All five defendants exercised their right to delay entering any plea.
During the recesses, the defendants prayed and chatted amongst themselves, and passed around a copy of The Economist magazine.
A group of people whose relatives died in the attacks were chosen by lottery to attend the proceedings.
The tribunal has been adjourned until June 12.
Julie Noce, Reuters
