At least eight people were killed when a car bomb exploded near the national security headquarters in Somalia's capital, officials and a Reuters witness said on Thursday. 'A suicide car bomb targeted a national security car passing along these tea shops. We have carried seven dead civilians so far,' Abdullahi Hassan, the district commissioner of Mogadishu's Abdiasis district, told Reuters at the scene. A Reuters witness counted eight dead people. No one immediately claimed responsibility for the blast.