Egypt in crisis: Crowds throng Cairo's Tahrir Square
7 July 2013 Last updated at 23:32 BST
Thousands of supporters of Egypt's deposed President Mohammed Morsi have been gathering in the east of Cairo to demand his reinstatement, while his opponents are stage a rival demonstration in Tahrir Square.
Mr Morsi, Egypt's first Islamist president, is in detention, along with some senior Muslim Brotherhood figures.
Lyse Doucet reports from Tahrir Square in Cairo.