Egypt votes on disputed constitution
Egyptians are voting in the second stage of a constitutional referendum that has sparked weeks of unrest.
Opponents of President Mohammed Morsi have held protests against the draft, saying it favours the Islamists now in power and betrays the revolution that overthrew Hosni Mubarak last year.
Mr Morsi's supporters say the constitution will secure democracy.
Some 250,000 security personnel have been deployed nationwide to try to keep order during the referendum.
Bethany Bell reports from Giza.
22 Dec 2012