Egypt clashes after army fire kills Morsi supporters
The violence came after three pro-Morsi demonstrators were killed by security forces in another part of the capital.
Troops later restored calm in Cairo, but nationwide violence left some 26 dead and 318 injured, officials said.
The army removed Mr Morsi from power on Wednesday after millions of people protested over his leadership.
Mr Morsi, Egypt's first freely elected leader, is in detention, as are some senior figures in the Brotherhood: early on Saturday, state media reported the Brotherhood's deputy leader Khairat el-Shater had been arrested at his Cairo home on suspicion of incitement to violence, kazinform refers to BBC.
The Tamarod [Rebel] movement - which organised recent anti-Morsi protests - accused the ousted president of pursuing an Islamist agenda against the wishes most Egyptians, and of failing to tackle economic problems.
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