US envoy Burns in Cairo for talks
US Deputy Secretary of State William Burns is due to hold talks in Cairo later with leaders of Egypt's new military-backed government, BBC reported.
It is the first visit by a senior US official since the army ousted Islamist President Mohamed Morsi on 4 July.
Washington says Mr Burns will urge "an end to all violence and a transition leading to an inclusive, democratically elected civilian government."
Earlier Egypt's public prosecutor froze the assets of 14 Islamist leaders.
The Muslim Brotherhood head Mohammed Badie and his deputy Khairat al-Shater are reported to be among them.
It comes as part of an investigation into the incitement of violence at protests.
Dozens of people have died during major demonstrations held by rival pro- and anti-Morsi protesters in the past two weeks.
Both sides are expected to hold further rallies to coincide with Mr Burns' visit on Monday.