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STORY: Security forces shot dead at least three supporters of deposed Egyptian President Mohamed Mursi on Friday as a crowd of hundreds tried to march towards the military barracks in Cairo where he is being held by the military that overthrew him.

Thousands of Mursi supporters demonstrated in cities across the country on what his Muslim Brotherhood called a "Friday of rage" against what they describe as a military coup that toppled Egypt's first elected leader a year after he took office.

A witness told Reuters he saw several people fall to the ground, wounded by shotgun pellets. Security sources told Reuters at least three demonstrators were killed when security forces opened fire.