The U.S. has come under strong criticism for allegedly operating such centers in Romania, Poland, Ukraine, Kosovo, Macedonia, and Bulgaria. U.S. officials have neither confirmed nor denied the existence of the centers, but say no laws were violated.
Marty said he estimated more than 100 people were involved in the renditions -- the practice of delivering prisoners to jails in third countries for possible mistreatment or torture.
He said European governments probably knew about the renditions, but did not disclose them.
2005 In Pictures
A slideshow of images related to the top news stories of 2005.