Egypt's interim prime minister told Reuters he hopes to swear in his new cabinet by the end of next week.
Hazem el-Biblawi, a liberal economist and former finance minister, said he will begin contacting candidates on Sunday and Monday.
He was named interim prime minister after Egypt's army deposed president Mohamed Morsi last week.
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.