Calm returned to two Egyptian governorates on Friday afternoon after supporters of ousted President Mohamed Morsi clashed with anti-Morsi protesters and security forces.
In Fayoum, some 100 km south of Cairo, calm prevailed in the vicinity of the local security directorate following clashes earlier in the day, a security source told Anadolu Agency.
The violence began after Morsi backers tried to storm the directorate, prompting police to fire teargas in an effort to disperse them.
Eyewitnesses said that at least 28 people had been injured, including three policemen.
According to the Muslim Brotherhood, the group from which the ousted president hails, scores of Morsi supporters suffered teargas inhalation and birdshot injuries.
Most of the injured were discharged from hospital after having been treated for gas inhalation, Health Ministry official Medhat Mohamed said.
According to the security source, at least 11 pro-Morsi demonstrators were arrested.
In the Nile Delta governorate of Sharqiya, meanwhile, at least 15 people were injured in clashes between pro- and anti-Morsi demonstrators following Friday prayers.
According to medics at the scene, only one person was injured in the melee, who received on-the-spot medical treatment.
An eyewitness said the clashes had erupted after Morsi supporters engaged in verbal skirmishes with opponents.
The ousted president's backers staged a fresh round of rallies on Friday to denounce the "military coup" against the elected leader and demand his reinstatement.
Friday's rallies were called by the National Alliance for the Defense of Legitimacy, a coalition of groups supportive of the deposed president, under the banner "Eid of victory."
Ever since Morsi's July 3 ouster by the army following mass protests against him, his supporters have been staging daily demonstrations and sit-ins to demand his return to the presidency.
The two largest pro-Morsi sit-ins are in Rabaa al-Adawiya Square in eastern Cairo and Nahda Square in Giza.
The government has described the twin sit-ins as a "threat to national security" and mandated the interior minister to take "all necessary measures" to disperse them.
On Wednesday, interim Prime Minister Hazem al-Beblawi said the government would not retreat from its stated plan to break up the two sit-ins.
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