Egypt crisis: Security forces try to end mosque stand-off
17 August 2013 Last updated at 08:13 BST
Egyptian security forces are trying to end a siege at a Cairo mosque where hundreds of Muslim Brotherhood supporters spent the night barricaded.
Hundreds of people are believed to be inside the al-Fath building.
The BBC's Bethany Bell said pictures show people inside the mosque building a make-shift barricade.