NEW : A U.S. Defense Department official , who declined to be identified due to the sensitive nature of the issue , told CNN that Libya 's remaining stock of highly enriched uranium was removed from the country as of 2009 . Tunisia says it has detained Libya 's former prime minister under Gadhafi . The U.S. has been monitoring Libya 's yellowcake stockpile , a defense official says . Score: 6 Troops have been putting pressure on several regime holdout cities in recent days .
NEW : Tunisia says it has detained Libya 's former prime minister under Gadhafi . The U.S. has been monitoring Libya 's yellowcake stockpile , a defense official says . Score: 6 Troops have been putting pressure on several regime holdout cities in recent days .