Speaking above the sound of gunfire, Luke said he had heard that Gaddafi's tanks had entered the area around Green Square. There is also sniper fire.
Hundreds of rebel fighters pushed into the centre of the Libyan capital, Tripoli, late on Sunday as their battle to overthrow the 42-year rule of Muammar Gaddafi moved closer to ending in victory.
Rebels waved opposition flags and fired guns into the air in jubilation after reaching Tripoli's central Green Square, the symbolic heart of the city, in the early hours of Monday morning.
Delighted residents were seen pouring into the streets to celebrate and greet the rebel fighters as they advanced through the suburbs towards the centre.








