A spate of militant attacks on Egyptian security forces and government officials could be a nascent insurgency.
Security forces still deployed on streets, and police may still have carte blanche to crack down.
Egypt's former President Morsi, deposed in a July coup and now in the dock along with fellow members of the Muslim Brotherhood, refused to recognize the court's authority.
Essam el-Erian became just the latest Muslim Brotherhood to be arrested since the military overthrow the group's president in July. A court showdown is looming for next week.