Numbers of dead and injured are widely varying at this point, with MB spokesperson saying hundreds dead and thousands injured. Emergency Services early numbers are dozens killed.

Via Fox News:

Casualties have been reported after Egyptian security forces moved on Wednesday to clear two sit-in camps that have sprung up in Cairo in support of ousted President Mohammed Morsi, state television and security officials said.

At least two members of the security forces were confirmed to have died in the morning’s crackdown while a group representing the protesters said as many as 25 protesters were killed in one of the camps.

The operation began shortly after 7 a.m. local time, when Egyptian officials told the Associated Press that tear gas had been fired into the larger of the two demonstrations, located in the eastern Cairo neighborhood of Nasr City.

The smaller of the two camps was cleared of protesters by late morning, with most of them taking refuge in the nearby Orman botanical gardens and inside the sprawling campus of Cairo University.

 Keep reading…

Reporters on the ground who tried to get into the area report being fired upon: