Tunisia: security stepped up after leader Ben Ali flees

Security has been stepped up in centre of the Tunisian capital, a day after President Zine al-Abidine Ben Ali was forced from power by street protests.

Hundreds of troops are patrolling Tunis and a state of emergency is in force. Interim leader Mohammed Ghannouchi has said his priority is restoring order.

There were scenes of looting overnight in several areas, witnesses said.

Wyre Davies reports from Tunis.