troops and militia men opened fire on some of them. reportedly killing numerous people. the white house has announced plans for unilateral sanctions against libya. a u.s. chartered vessel left tripoli for malta after three days of waiting the american embassy in libya has closed. gaddafi has already lost several cities and regions in libya. one of those is tubrok near the border with egypt. correspondent david lee miller the tells us how it happened. >> a week ago, these men might have been executed or worse for what they are doing. defacing a portrait of gaddafi. but now people can treely demonstrate how they feel about the man that led the country for as long as most can remember. last friday, residents here took back their city. today in the town square after morning prayers, thousands celebrated and urged other libyans to also kick out the regime.