Mohammad Omar Aly Hassan, Ziyad Yaghi and Hysen Sherifi face multiple felony charges related to allegations they conspired to attack the U.S. Marine Corps base in Quantico, Va., and targets overseas. They have pleaded not guilty.
A fourth defendant, Anes Subasic, has waived his right to an attorney and is representing himself. He will be tried following the conclusion of proceedings against the other three.
Accused ringleader Daniel Patrick Boyd pleaded guilty in February to charges of conspiracy to provide material support to terrorists and conspiracy to murder, kidnap, maim, and injure persons in a foreign country. His sons, Dylan and Zakariya Boyd, have also pleaded guilty.