A mosque near Cairo's Ramses Square has been turned into a makeshift morgue after another day of clashes between people loyal to ousted President Mohammed Morsi and pro-democracy protesters, and Egypt's security forces.

Those injured in the violence are being treated on the ground floor of the mosque, with the bodies of those killed taken upstairs to be prepared for burial.

Middle East Editor Jeremy Bowen reports that so many bodies have been brought in that doctors have had to send out for more cotton to wrap them in.

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