The death toll from nationwide clashes on Sunday's October War anniversary has climbed to 57, a health ministry official said on Tuesday.
Three-hundred and ninety-three others were wounded in the violence.
Supporters of deposed president Mohamed Morsi clashed with pro-military civilians and security forces in one of the deadliest days of violence since hundreds of Morsi supporters were killed on 14 August.
Morsi loyalists plan fresh protests this week, sparking fears of further violence.
On Monday, suspected militants killed nine people. Three policemen were killed by a car bomb in South Sinai, and gunmen shot dead six soldiers near the Suez Canal city of Ismailiya.
Earlier in the day, assailants fired rocket-propelled grenades at a satellite communication dish in Cairo's Maadi district.
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