An Egyptian court sentenced 529 members of the Muslim Brotherhood to death for murder and inciting violence during protests in August.
The specific charges include the murder of a police officer, attempted murder of two others, and attacking a police station last August. The violence came after police broke up two makeshift protest camps in Cairo. The protesters were demanding that ousted president Mohammed Morsi be returned to power. Morsi continues to await trials.
Amnesty International has called the ruling "grotesque." It is the largest mass death sentencing in modern Egyptian history. The verdict can be appealed and a retrial is expected.
Another 700 Muslim brotherhood supporters will face trial Tuesday, also under the charges of inciting violence.