say they heard a huge blast. smoke was everywhere, while shrapnel hit the bus. it was the first such bombing in jerusalem in seven years. the city center has been closed off by the police. this attack comes amid a surge of violence along the israeli/gaza border. the palestinian prime minister condemned this attack, while no organization has claimed responsibility. back to you, contessa. all right, paul, thank you for bringing us up to date there in jerusalem. let s turn our attention now to libya, where moammar gadhafis forces are fighting a fierce battle in miscellaneous misrata. people are reportedly cowering in their darkened homes. this is video from tripoli, it shows anti aircraft artillery and tracer bullets being fired into the night sky. also last night, libyan tv broadcast what it said was live coverage to the nation, the first since the shelling began. he told the crowd, we ll beat em. nbc s richard engel is watching developments in other towns where gadhafi s