prime minister has just stepped down. amid protests in this country. we begin with david in libya. there is concern that the conflict will grow bloodier before it is over. there was a significant evacuation that took place a short time ago. we shot video that you are now about to see. 150 or so oil workers were placed on board the british royal navy frigate the hms cumberland. they are on their way to the island of malta, about a 36 hour trip. i talked to a number and most said and that now is the time to leave before the situation does grow worse. meanwhile, we are getting reports this evening that on the outskirts of the capital tripoli a town directly south province is now in the hands of antigovernment forces. the bat we have amateur video of the battle. this is 30-miles from tripoli and underscores the fact that the opposition forces to muammar qadaffi are moving closer and closer to the capital as qadaffi and his sons repeatedly say they are going to dig in, causi