Two people have died at fresh protests mounted by Egypt's Muslim Brotherhood in the cities of Ismailiya and Fayoum.
Police in the capital Cairo fired tear gas to disperse demonstrators.
It comes a day after two people were killed in clashes at an Islamist demonstration in Alexandria.
Supporters of the Brotherhood's ousted President Mohammed Morsi have held frequent protests since he was removed in July. The Brotherhood was last month declared a terrorist group.
The military-backed government has pursued a crackdown on the organisation in recent months.