Rebels waving opposition flags and firing into the air drove into Green Square, which rebels began calling Martyrs Square.

Earlier, a convoy of rebels entered a western neighbourhood of the city. Rebels said the whole of the city was under their control except Gaddafi's Bab Al-Aziziyah stronghold, according to al-Jazeera Television.

Two of Gaddafi's sons were captured by the rebels, who were also reported to have seized the Libyan state radio building in the capital. Gaddafi's presidential guard units laid down their arms.

Gaddafi earlier had made two audio addresses over state television calling on Libyans to fight off the rebels.

But resistance to the rebels appeared to have largely faded away, allowing the rebels and their supporters to demonstrate in Green Square.        

Reuters