Attacks against Egyptian security forces have taken place mostly in northern Sinai, prompting the army to wage a war there against local militants. Some attacks also occur in Cairo, however, and suspected Morsi supporters have attacked police stations, government buildings and churches in a string of provincial towns and cities.
On Friday, two policemen and two civilians were wounded when attackers riding a motorbike hurled a grenade at a police checkpoint in Qalioubiya province, north of Cairo, Egypt's state news agency MENA reported.
Meanwhile, Morsi supporters held scattered protests across the country denouncing the coup that ousted him. Their demonstrations have witnessed a sharp decrease in numbers since a heavy security crackdown left hundreds dead and thousands in jail. Most Brotherhood leaders have been arrested, including top leader Mohammed Badie. On Monday, the organization was banned by an Egyptian court that ordered its assets confiscated.
Friday, hundreds marched in the middle-class suburb of Helwan, south of Cairo, holding up yellow posters with the outline of a hand showing four fingers. Morsi supporters have used the symbol in online and street campaigns to remember the sit-in protest around the Rabaah al-Adawiya mosque, which in Arabic means fourth.
Clashes broke out between Morsi's supporters and opponents in the Mediterranean city of Alexandria, the website of the state-owned Al-Ahram daily newspaper reported. State radio said security forces intervened after Morsi supporters fired birdshot, arresting fourteen of them. MENA said clashes also broke out in another poor Cairo suburb.
Five people were also injured in similar clashes in the Nile Delta province of Damietta, Al-Ahram said.
Egypt's military-backed interim government is pushing a fast-track timetable for a return to democracy by amending the now-suspended constitution and holding presidential and parliamentary elections early next year.