Libya conflict: Rebels fight for key towns near Tripoli

Libyan rebel fighters have advanced into two strategically important towns controlling access to the capital, Tripoli, from the west and the south.

Fighting was reported in both Zawiya, 50km (30 miles) west of Tripoli, and Gharyan, 80km (50 miles) to the south.

If the towns fall to the rebels they would have Tripoli surrounded by land, with Nato blocking sea access.

Matthew Price reports.