Ashton is visiting Egypt on Monday, hoping to help quell the violence.
"I am going to Egypt to speak to all sides and to reinforce our message that there must be a fully inclusive transition process, taking in all political groups, including the Muslim Brotherhood," Ashton said in a statement." This process must lead -- as soon as possible -- to constitutional order, free and fair elections and a civilian-led government. I will also repeat my call to end all violence. I deeply deplore the loss of life."
On Saturday, U.S. Secretary of State John Kerry talked with Egypt's interim vice president and foreign minister, expressing the administration's concern about the violence.
"This is a pivotal moment for Egypt," Kerry said in a statement Saturday. "Over two years ago, the revolution began. Its final verdict is not decided, but it will be forever impacted by what happens now."
Things could get uglier
The government is threatening to break up demonstrations in what could well be another bloody confrontation between demonstrators and security forces.
On Sunday, Mansour, Egypt's interim president, issued a powder-keg decree making preparations for a possible "state of emergency," the EGYnews website reported.
"State of emergency" is a loaded term in Egypt, where former President Hosni Mubarak ruled for 30 years under an emergency decree that barred unauthorized assembly, restricted freedom of speech and allowed police to jail people indefinitely.
However, Mansour's spokesman, Ahmed El Meslemani, said Monday in a televised news conference that the government has no plans to declare emergency law.
Still, the National Defense Council has issued a stern warning to protesters backing Morsy to end their protests or face "decisive decisions" for violating the law, and El-Beblawi said the government cannot stand by while protesters disrupt normal routines.
On Monday, Military helicopters dropped leaflets on pro-Morsy protesters in Rabaa al-Adawiya and appealed for them not to approach military installations and units, EGYnews said.
"We call on everyone to cooperate and respond to the instructions of the armed forces personnel in order for the security and stability of the country. No violence. Do not sabotage. No bloodshed," the leaflets read.