A witness says the bomber appeared to be about 13 . Potiskum , the commercial capital of Yobe state , has been repeatedly rocked by deadly Boko Haram bomb and gun attacks during the group 's armed attempt to establish a strict Islamic state in northern Nigeria . The blast occurred at a busy intersection in central Kabul where many people were out shopping for Eid al-Fitr -- an Islamic holiday marking the end of Ramadan.
A witness says the bomber appeared to be about 13 . The blast occurred at a busy intersection in central Kabul where many people were out shopping for Eid al-Fitr -- an Islamic holiday marking the end of Ramadan.