At least four tanks deployed outside the Egyptian presidential palace on Thursday in a street where supporters and opponents of President Mohamed Morsi had been clashing into the early hours of the morning.
Three armored troop carriers were also in the street outside the palace. The violence that had stretched from Wednesday afternoon into the early hours of Thursday had abated and the streets were calm.
The state news agency reported on Thursday said deployment around the presidential palace aims to secure the building following violent protests between supporters and opponents of Morsi in the area.
"The Republican Guard began a deployment around the headquarters of the presidency ... to secure the headquarters of the presidency in its capacity as a symbol of the state and the official headquarters of government," the agency reported.
The Republican Guard is responsible for guarding presidential offices across the country.
The soldiers' badges identified them as members of the Republican Guard, whose duties include guarding the presidency.
Traffic was moving through streets strewn with rocks thrown during the violence. Hundreds of Morsi supporters were still in the area, many wrapped in blankets and some reading the Koran.
"We came here to support President Morsi and his decisions. He is the elected president of Egypt," said Emad Abou Salem, 40, a Mursi supporter. "He has legitimacy and nobody else does."
On Thursday, Islamists battled with protesters outside Egyptian President Mohamed Morsi's palace after his vice president suggested amendments could be agreed to the draft constitution that has divided the nation.
Fires burned in the streets near the palace perimeter where opponents and supporters of Morsi threw stones and petrol bombs. Riot police tried to separate the two sides, but failed to halt fighting that extended from Wednesday into the early morning.
Residents, frustrated that police had not calmed the streets, set up makeshift road blocks nearby to check passers-by, scenes reminiscent of the popular uprising that toppled Morsi's autocratic predecessor Hosni Mubarak.
Five people were killed and 350 injured in the clashes, according to a statement released by the Ministry of Health.
"No to dictatorship," Morsi's opponents chanted, while their rivals chanted: "Defending Morsi is defending Islam."
Morsi's opponents accused him of creating a new autocracy by awarding himself extraordinary powers in a decree on November 22 and were further angered when an Islamist-dominated assembly pushed through a draft constitution that opponents said did not properly represent the aspirations of the whole nation.
The United States, worried about the stability of a state that has a peace deal with Israel and to which it gives $1.3 billion in military aid each year, called for dialogue.
Bidding to end the worst crisis since Morsi took office less than six months ago, Vice President Mahmoud Mekky said amendments to disputed articles in the constitution could be agreed with the opposition. A written agreement could then go to parliament, to be elected after a referendum on the constitution on December 15.
"There must be consensus," he told a news conference inside the presidential palace as fighting raged outside on Wednesday evening, saying opposition demands had to be respected.
Prime Minister Hisham Kandil called for calm to "give the opportunity" for efforts underway to start a national dialogue.
Protests spread to other cities, and offices of the Muslim Brotherhood's political party in Ismailia and Suez were torched.
But Morsi has shown no sign of buckling under pressure from protestors, confident that the Islamists, who have dominated both elections since Mubarak was overthrown in February 2011, can win the referendum and parliamentary election to follow.
On top of the support of the Brotherhood, which backed him for the presidency in the June election, Morsi may also be able to rely on a popular yearning for stability and economic revival after almost two years of political turmoil.
Egypt's opposition coalition blamed Morsi for the violence and said it was ready for dialogue if the Islamist leader scrapped the decree that gave him wide powers and shielded his decisions from judicial review.
"Today what is happening in the Egyptian street, polarization and division, is something that could and is actually drawing us to violence and could draw us to something worse," opposition coordinator Mohamed ElBaradei said on Wednesday.
"We are ready for dialogue if the constitutional decree is cancelled ... and the referendum on this constitution is postponed," he told a news conference.
But liberals, leftists, Christians, ex-Mubarak followers and others opposed to Morsi have yet to generate a mass movement or a grassroots base to challenge the Brotherhood.
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