An army helicopter on Monday dropped leaflets on supporters of ousted President Mohamed Morsi in Rab'a al-Adaweya, asking them not to use violence and warning them against approaching military facilities.
"We urge you not to come near a military unit of facility," read the leaflet.
"Do not make anyone pushes you towards violence or sabotage. Your voice is enough," it added.
"No violence. No sabotage. No bloodshed."
At least 88 people were killed and thousands were wounded in the early hours of Saturday after Morsi supporters came under attack in the vicinity of Rab'a al-Adaweya Square, the site of a month-long sit-in by Morsi supporters.
Egypt's National Defense Council (NDC) has asked Morsi supporters to "immediately stop practicing violence, terrorism, and verbal and physical assault on citizens."
"The NDC urges the elements staging sit-ins in Rab'a al-Adaweya and Nahda Square to immediately renounce all forms of violence and immediately stop practicing violence, terrorism, and verbal and physical assault on citizens," the council said in a statement late Sunday.
"The NDC urges these elements to immediately stop inciting hatred, stop incitement against Egyptians and state institutions and stop breaking the law and putting citizens' lives at risk."
Ever since his ouster by the military on July 3, Morsi supporters have been staging daily mass demonstrations and sit-ins nationwide demanding his reinstatement.
The two biggest sit-ins have been staged in Rab'a al-Adaweya Square in eastern Cairo and Nahda Square in Giza.