MENA also says the prosecutor on Wednesday issued arrest warrants for two leading activists accused of inciting demonstrators. He also released more than 10 female protesters. Witnesses say the women were released in the desert in the middle of the night.
On Tuesday, security forces used water cannons to break up the demonstration outside Cairo's upper house of parliament, where protesters denounced a proposed constitutional amendment allowing military courts to try civilians.
Many observers said police behavior was reminiscent of the days former President Hosni Mubarak, Egypt's longtime autocrat ousted in 2011.
On another note, Germany's Foreign Office says a German-Egyptian novelist who disappeared in Cairo a few days ago has resurfaced.
A Foreign Office spokesperson said Hamed Abdel-Samad, known for critical and sometimes provocative statements on religion and society, resurfaced Tuesday and has been in contact with the German ambassador in Cairo. He disappeared on Sunday.
The spokesperson, who talked on condition of anonymity in line with department policy, declined to comment on reports that Abdel-Samad had been kidnapped.