Egypt says foreign mediation has failed to resolve crisis

International efforts to resolve the political crisis which followed the ousting of Mohammed Morsi have failed, Egypt's interim presidency says.

Interim head of state Adly Mansour and his supporters in the military have been talking to diplomats from the US, EU, Qatar and the United Arab Emirates.

Mohammed Morsi supporters have vowed to maintain their protest camp outside a Cairo mosque despite a government threat to break it up.

Caroline Wyatt reports from Cairo.