Egypt's Muslim Brotherhood is calling on supporters of the country's deposed President, Mohammed Morsi, to take part in a further day of protests tomorrow.
Hatem Azam, a spokesman for a coalition led by the Muslim Brotherhood, said:
"In protest against the military coup that was followed by suppressive actions, topped by the Republican Guard massacre that took place at dawn, we call on all citizens and honourable people to protest on Tuesday across Egypt".
The Muslim Brotherhood tells ITV News they are against violence but will "pay the price of their blood" to restore their ousted president.
Egypt's army has named two further officials in the transitional government as its supporters and opponents vowed to stay on the streets.
There has been outrage in Egypt after 51 people were killed near an barracks where ousted President Mohamed Morsi is thought to be held.