Egyptian Islamists have called for rallies in Cairo on Friday for a day of "anger" after more than 300 were killed in a crackdown on their protest camps, a spokesman said.

"Anti-coup rallies tomorrow will depart from all mosques of Cairo and head towards Ramsis square after Jumaa prayer in 'Friday of Anger'," Muslim Brotherhood spokesman Gehad El Haddad wrote on his Twitter account.

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