A suicide truck bomb killed more than 70 people Tuesday . In December 2009 , a suicide bomber attacked a university graduation ceremony in Mogadishu , killing more than 20 people . The attack occurred in the town of Mazar-i-Sharif, a stronghold for Taliban militants and their allies who have been fighting U.S.-led forces since 2001. Al-Shabaab claimed responsibility for the blast .
A suicide truck bomb killed more than 70 people Tuesday . The attack occurred in the town of Mazar-i-Sharif, a stronghold for Taliban militants and their allies who have been fighting U.S.-led forces since 2001. Al-Shabaab claimed responsibility for the blast .