A camera is attached to the remote-controlled toy, which flies above the protests at Rabaa Al-Adaweya square and films and photographs people, Aljazeera news network reported.
The small drone is banned as a propaganda tool, but activists have brought in some from outside Egypt.
On July 3, the head of Egypt’s army chief Abdel-Fattah al-Sisi announced that president Mohamed Morsi was no longer in power. Al-Sisi also dissolved the Egyptian constitution.
The Chief Justice of Egypt’s Supreme Constitutional Court, Adli Mansour, was sworn in as interim president on July 4.
Since then, Egypt has been the scene of rival rallies and clashes between thousands of the supporters and opponents of Morsi.
NTJ/BA