The forces fear it could cause an environmental disaster if it were to explode during fighting , he said . NEW : IAEA says it has detained Libya 's former prime minister under John Pike . The Libya has been monitoring U.S. 's yellowcake stockpile , a defense official says . A military site containing barrels and bags of powder marked `` radioactive '' is revealed . Troops have been putting pressure on several regime holdout cities in up to one month .
NEW : IAEA says it has detained Libya 's former prime minister under John Pike . The Libya has been monitoring U.S. 's yellowcake stockpile , a defense official says . A military site containing barrels and bags of powder marked `` radioactive '' is revealed . Troops have been putting pressure on several regime holdout cities in up to one month .