Protests in Egypt Heighten (Photos)

Protesters have come out in droves as Egyptian President Morsi's 48-hour army ultimatum to relinquish power winds down.

Egyptian opponents of Egyptian President Mohammed Morsi gather during a protest calling for his ouster at Cairo's landmark Tahrir Square, on July 2, 2013. (Khaled Desouki/AFP/Getty Images)

Egyptian opponents of Egyptian President Mohammed Morsi gather during a protest calling for his ouster at Cairo's landmark Tahrir Square, on July 2, 2013.

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Hundreds of thousands of Egyptian demonstrators have gathered to call for the ouster of President Mohammed Morsi as a 48-hour army ultimatum winds down, according to the AP.

The outpouring is the biggest protest in Egypt since the 2011 revolt. Meanwhile, Morsi vowed to stay in power in a speech Tuesday, according to the New York Times. Egyptian armed forces said they will intervene if Morsi did not resign by Wednesday.

The scene in photos:

Egyptian army helicopters fly over the presidential palace Monday in Cairo.

Morsi opponents shout slogans and wave national flags Tuesday in Tahrir Square.

Protesters begin to gather in Tahrir Square Wednesday.

Protesters gather in Tahrir Square Wednesday.

A boy looks over as Morsi opponents call for his ouster in Tahrir Square Tuesday.

Egyptian protesters direct laser lights on a military helicopter flying over the presidential palace Sunday in Cairo.

Egyptian protesters ransack the Muslim Brotherhood headquarters Monday in the Muqatam district in Cairo.

Morsi supporters participate in a pro-government rally Monday near the Rabaa Adawiya mosque in Cairo.

A car burns during clashes between residents and Muslim Brotherhood members and Egyptian President Mohammed Morsi supporters on Wednesday outside Cairo University.

Morsi opponents chant slogans during a protest Monday outside the presidential palace in Cairo.

Supporters hold posters of Egypt's Islamist President Mohammed Morsi during a rally Tuesday near Cairo University Square in Giza. The Arabic reads,"no alternative to legitimacy" while a Syrian revolutionary flag flies in the background.

Morsi opponents outside the presidential palace in Cairo Monday.

A Morsi opponent wearing a Guy Fawkes mask stands under a large national flag Tuesday.

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