The United States is leading a global condemnation of Egypt's recent security crackdown on supporters of ousted president Mohamed Morsi.
Secretary of State John Kerry has called on authorities in Cairo to end their blood thirsty attacks, and hold elections.
Earlier, Kerry and the U.S. Government had given his endorsement to a military-backed government, News.com.au reports.
Criticism at that point of time would have halted US 1.3 billion dollars in annual military aid to Cairo.
Kerry said that the crackdown on civilians runs counter to Egyptian aspirations for peace, inclusion and genuine democracy.
He called for the interim government and the military to hold responsibility for preventing further violence and establish peace in the nation by holding parliamentary and presidential elections and amending the constitution.
The United Nations, the European Union, Britain, France, Iran, Qatar and Turkey have strongly denounced the use of force by the military-backed interim government to clear two protest camps in Cairo, the report added.
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British Foreign Secretary William Hague said he was deeply concerned at the escalating violence and unrest in the region.
EU foreign affairs chief Catherine Ashton and the Qatar Government have urged Egypt's rulers to end the month-long state of emergency imposed in the wake of the crackdown.