and now bbc world news. gunfire and tear gas on the streets of libya. anti-government protesters call for the resignation of the libyan leader. qaddafi s son warns pro-government tribesmen are on their way to tripoli to help stem the protests. tunisia calls for deposed president ben ali to be extradited from saudi arabia to face corruption charges. welcome to bbc world news. i m geeta guru-murthy. also in this program the death sentence imposed on the only surviving gunman in the 2008 mumbai attacks is upheld. could libya be next, and how much bloodshed will there be in the coming days? the violence now reached the capital tripoli, and colonel qaddafi s son has warned of civil war. it s still difficult to get clear information from the country. some reports say it s quiet on the streets, others say there s fire. there are also reports of a mass of protesters last night. opposition forces are believed to be in control in the second city. there s no information on th