The operation began shortly after dawn when security forces surrounded the sprawling Rabaa al-Adawiya camp in east Cairo and a similar one at Al-Nahda square, in the centre of the capital.
Witnesses and an AFP correspondent said police rained canisters of tear gas down onto tents before entering Rabaa al-Adawiya, sparking pandemonium among the thousands of protesters who set up the camp soon after Morsi was ousted by the army on July 3.
Men in gas masks rushed to grab each canister and dunk them in containers of water, as the main stage near the mosque of the camp blared Islamic anthems and protesters chanted "Allahu Akbar" (God is greatest.)
Clashes quickly erupted between protesters and security forces on one side of the camp, as automatic fire could be heard. It was not immediately clear who was doing the shooting.
An AFP correspondent counted 43 bodies at a makeshift morgue at Rabaa al-Adawiya, adding that many appeared to have died from gunshot wounds.
There were no women or children among the dead, the correspondent said.















