Egypt referendum shows 'deep divisions'

More than 200,000 security personnel are deployed in Egypt for the second and final round of a referendum on an Islamist-backed constitution that has polarised opinion in the country.

Official results are not expected until Monday.

It is hoped there will be no repeat of the violent scenes that have taken place since the first round of voting.

The BBC's Bethany Bell said the referendum had exposed deep divisions in Egypt.