On the ground with armed rebels in Western Libya

Forces fighting to oust the Libyan leader have seized the city of Zawiya, 50km (30 miles) west of Tripoli.

However the Libyan capital remains under the control of Col Gaddafi who is facing relentless pressure to concede defeat and end his 41-year rule.

The BBC's Ian Pannell is in Western Libya, where he encountered well-armed anti-Gaddafi rebels who had set up a road block.