NEW : Al - Shabaab claims responsibility ; the slain official worked with ' foreign ' spies . NEW : Hospital : 8 people killed are treated at a Mogadishu hospital . In a separate bombing , a man 's car explodes but he is unhurt . Al - Qaeda 's mission is transforming Somalia into a fundamentalist Islamic state .
NEW : Al-Shabaab claims responsibility ; says slain official worked with 'foreign ' spies . NEW : Sources : 8 people injured are treated at a Mogadishu hospital . In a separate bombing , a lawmaker 's car explodes but he is unhurt . Al-Shabaab 's mission includes turning Somalia into a fundamentalist Islamic state .