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At least 100 people were killed early Saturday when riot police fired on protesters supporting deposed Egyptian President Mohammed Morsi in Cairo, activists said.

The Anti-Coup Alliance, an umbrella coalition of Morsi supporters, also said at least 5,000 people were injured near the clash in the Nasr City neighborhood of the capital.

Many of the bodies of those killed were still at a field hospital near the pro-Morsi protest site and were not officially registered with health officials. The official death toll was based only on bodies tallied at government morgues, so that figure was only at 21.

Hundreds of thousands of people took part in rival political rallies in various Egyptian cities on Friday and the violence continued into the night.

Both supporters of the army and Morsi backers had announced they would be protesting Friday and warned there could be bloodshed. Army chief Gen. Abdel Fattah al-Sisi urged Egyptians earlier in the week to hold rallies to give the military a “mandate” to confront weeks of violence caused by his July 3 overthrow of Morsi, Reuters reported.

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