September : A flight ban over Benghazi is announced . The city appears calm a day after a spasm of violence . At least 20 were killed , Health Ministry said . Libya has been struggling to deal with violence since President Gadhafi 's ouster .
NEW : A flight ban over Benghazi is announced . The city appears calm a day after a spasm of violence . At least 139 people wounded , Health Ministry says . Libya has been struggling to deal with violence since Moammar Gadhafi 's ouster .