Thousands of opposition fighters are streaming into the capital Tripoli, they have taken over the city's Green Square and vowed to rename it Martyrs' square.<br /><br />The square has been the scene of huge pro-Gaddafi protests, so the scenes of people celebrating are particularly symbolic.<br /><br />The rebels say one of Muammar Gaddafi's sons, Saif Al Islam, has been captured, and another, Mohammed, is under arrest.<br /><br />Al Jazeera's Sonia Gallego reports.
