Rebel casualties mount as they near Gaddafi stronghold

There has been heavy fighting in Libya outside one of the Gaddafi regime's last strongholds.

Anti-Gaddafi forces have been preparing for an attack on Sirte, Col Muammar Gaddafi's birthplace.

Regime loyalists in the town have been given until 10 September to surrender.

The BBC's Paul Wood was caught up in the fighting close to the front line, about 40 miles east of Sirte and sent this report.