A car bomb exploded in the opposition-held city of Benghazi, just outside a hotel used as a base by foreign diplomats and journalists.<br /><br />Explosions have also been heard in Tripoli where NATO bombers have carried out more airstrikes on Libya's capital.<br /> <br />Meanwhile a UN report has accused both sides of war crimes.<br /> <br />Al jazeera's Sue Turton reports from Benghazi.
