CAIRO, Aug. 30 (Xinhua) -- Egypt's police forces fired tear gas to disperse rallies of the supporters of the ousted President Mohamed Morsi in Cairo and Giza governorates after Muslims' Friday noon prayers.
TV footage showed that the police fired tear gas on protesters who gathered in Cairo's Sphinx Square after finishing prayer in Moustafa Mahmoud mosque in Giza's Mohandesine district.
As gunshots were heard near the square, the security forces moved quickly to close 15 May Bridge to prevent protesters from shooting people from the bridge, something that happened on Aug. 15.
Elsewhere in Egypt, clashes erupted between citizens and protesters in the coastal city of Alexandria, where Morsi's supporters attempted to hold a sit-in outside the Qaed Ibrahim Mosque after the prayer.
In the Delta city of Mansoura, dozens of people were injured in the clashes between Morsi's loyalists and opponents, while eight others were injured in Beheira governorate in similar clashes.
Hundreds of protesters caused traffic congestion in Haram's street in Giza, and the roads in Cairo's Heliopolis district were blocked by several hundreds of people, who surrounded the Ain Shams police station to call for release of Muslim Brotherhood members.
In western Cairo, hundreds of Morsi's supporters marched near Rabaa mosque, one of their two major sit-ins sites dispersed by police on Aug. 14.
Morsi's proponents, who wore white t-shirts with yellow Rabaa logo, chanted slogans against the army and the police forces, witnesses told Xinhua.
Some protesters raised placards calling for reinstatement of the "legitimate" president, while others asked for retaliation for the "martyrs" in recent police operations.
Security forces intensified presence in the entrances and exits of main squares and roads in anticipation of assaults on governmental, religious and premises.
On Thursday, Interior Ministry spokesman said the ministry " will use live ammunition based on the legitimate right of defense. "
So far, more than 200 members of the Muslim Brotherhood have been arrested, official news agency MENA reported.