Egypt's Interior Ministry said on Sunday it arrested 423 people in Cairo and Giza during clashes between supporters of deposed president Mohamed Morsi, their opponents, and police.
In a statement published on its official Facebook page, the Ministry said security forces arrested 180 people in Dokki and Manial areas in Giza and another 243 people in Ramses, downtown Cairo.
Meanwhile, General Sayed Shafiq, deputy Interior Minister, said that the security situation is now "under control" in Cairo.
Violent clashes erupted in Giza and downtown Cairo when pro-Morsi demonstrators and locals faced each other as the country marks the 40th anniversary of the October 1973 Arab-Israeli War.
Thousands of people took to the streets in support of the army during the celebrations. At the same time, hundreds of demonstrators staged marches in protest of what they see as a military "coup" against Morsi, who was deposed by the army in July amid popular protests against him.
Supporters of Morsi, mainly led by the Muslim Brotherhood - the group from which he hails - have been protesting the current interim leadership, calling for Morsi's reinstatement.