Rival political rallies are being held in Cairo, as Egypt's president prepares to attend 'unity talks' tomorrow.
In renouncing emergency powers he deemed essential just two weeks ago, Mohamed Morsi is trying to undo some of the damage he has inflicted.
Muslim Brotherhood candidate becomes Egypt's first democratically-elected president in decades. He said he carries a "message of peace".
Egypt's president has condemned reported Israeli air strikes against Syria, calling them a violation of international law and warned they complicate the ongoing crisis in the country.
A statement from President Mohamed Morsi's office said Egypt "strongly objects" to the bloodshed and the use of Syria's military against its people.
But Egypt also rejects the violation of Syrian sovereignty and "exploiting its internal crisis under whatever pretext". It said the Israeli attacks "increase the complexity of the situation".
Morsi's office said the attacks are a "real test" for the international community's commitment to respecting international law.
Popular satirist Bassem Youseef is being questioned by prosecutors in Egypt over allegations of insulting Islam and President Mohammed Morsi.
Mr Youssef arrived at the public prosecutor's office this morning, after a warrant was issued for his arrest yesterday.
Youseef, who shot to fame after winning a large number of followers online for his critical and witty look at public figures in Egypt following the 2011 uprising, has faced several complaints over his show El Bernam (The Programme).
His show is broadcast three times a week on one of Egypt's independent satellite stations. His recent portrayals of Morsi as a Pharaoh, or "Super Morsi", have angered Islamists and the president's supporters.
Mr Youssef's case is also seen as the latest in a string of prosecution actions against opponents of the president and the movement that supports him, the Muslim Brotherhood.
The US Secretary of State John Kerry has announced that Egypt will receive $190 million in budget aid after Egyptian President Mohamed Morsi agreed to new austerity measures.
Morsi's administration has said it wants to reopen talks with the IMF on a $4.8 billion loan which was agreed in principle last November but suspended at Cairo's request following street unrest.
Egypt's army spokesman said President Morsi will attend talks on "national unity" tomorrow afternoon, whilst Egypt's opposition coalition said it will decide tomorrow whether to attend, Reuters reports.
The head of Egypt's key association of judges says 90 percent of its members have voted not to oversee the nationwide referendum on the country's contentious draft constitution, due to take place this Saturday.
The move is unlikely to stop the referendum from taking place, but it casts doubt on the legitimacy of the constitutional drafting process. A faction of judges loyal to Morsi has said it would not boycott the vote
Meanwhile tens of thousands of Muslim Brotherhood supporters have gathered for a mass rally in support of the President in central Cairo.
Thousands of opponents and supporters of Egypt's president are staging rival rallies in the nation's capital, four days ahead a nationwide referendum on the new constitution proposed by President Morsi.
The demonstrations got underway just hours after a crowd of masked men set upon opposition protesters staging a sit-in at Tahrir Square, attacking them and their tents with knives and sticks according to security officials.
A health ministry spokesman told Egyptian state news agency MENA at least 11 protesters were wounded in the pre-dawn attack.
Despite the ambush opponents of Morsi remain camped out in Tahrir Square this afternoon.
A vital £2.98 billion International Monetary Fund loan to Egypt will be delayed until next month, as it battles political crisis.
The announcement came after President Mohamed Morsi yesterday backed down amid huge protests on planned tax increases, which were seen as key for the loan to go ahead.
Finance Minister Mumtaz al Said said the delay in the loan agreement was intended to allow time to explain a heavily criticised package of economic austerity measures to the Egyptian people. Speaking to Reuters, he said:
Of course the delay will have some economic impact, but we are discussing necessary measures (to address that) during the coming period. ... I am optimistic ... everything will be well, God willing.
Prime Minister Hisham Kandil said Egypt had requested that the loan be delayed by a month.
"The challenges are economic not political and must be dealt with aside from politics," he told a news conference.
Egypt's main opposition coalition has rejected President Morsi's referendum on a new constitution, which had been set for December 15.
The National Salvation Front issued a statement which also called for widespread protests on Tuesday to object to the draft constitution.