Libya: Anti-Gaddafi fighters continue advance to Sirte

Anti-Gaddafi forces are making slow, but steady progress on the loyalist stronghold of Sirte.

Troops loyal to ousted Libyan leader Col Muammar Gaddafi are continuing their resistence to the advance, as they are in the town of Bani Walid.

The BBC's Alastair Leithead has been travelling with anti-Gaddafi fighters on the road to Sirte.