Defense attorney Lynne Stewart shook her head, leaned forward and began to cry quietly as a federal jury convicted her Thursday of providing material support to a terrorist group.

Shocked supporters who had packed the courtroom of Southern District of New York Judge John Koeltl gasped and sobbed as the jury foreman confirmed that Stewart and her co-defendants, Ahmed Abdel Sattar and Mohamed Yousry, were guilty on all counts in one of the most high-profile anti-terrorism prosecutions since the Sept. 11, 2001, attacks.