Egypt's prosecutor general's office issued arrest warrants Wednesday for the spiritual leader of the Muslim Brotherhood, Mohammed Badie, and nine others.
The men are suspected of instigating violence outside the Republican Guard building in Cairo this week. The military intervened and 54 Brotherhood supporters were killed.
The Brotherhood and its supporters have threatened an armed uprising if former President Mohammed Morsi is not returned to power.
But foreign ministry spokesman Badr Abdul Atti said the ousted leader is being held in a "safe place."
"For his own safety and for the safety of the country, it is better to keep him in a safe place. Otherwise, the consequences will be dire," he warned.