Kano , Nigeria ( CNN ) A suicide blast targeting a bus station in northeast Nigeria on Sunday killed at least four people and injured 48 others . There was no immediate claim of responsibility , but previous bombings in the region have been blamed on Boko Haram Islamists by authorities . The attack happened in the town of Potiskum , police and hospital sources said . `` We have received four dead bodies and 48 people with several degrees of injuries from the bus station attacked by a suicide bomber , '' a paramedic at the Potiskum General Hospital said . The explosion rocked the Tashar Kunne open-air bus station on the outskirts of the town Sunday morning when the young suicide bomber ‎rammed his car into parked buses waiting to fill up with passengers , witnesses said . `` The bom‎ber looked around 13 and he drove his car into buses waiting for passengers , resulting in an explosion that shook the whole area , '' said grocer Hamza Ibrahim , who witnessed the blast . The suicide attack caused a stampede in the Potiskum main market which is held on Sunday , with traders and shoppers hurriedly evacuating the market , residents said . The ‎attack happened a week after two female suicide bombers attacked a mobile phone market in the town , killing four and injuring 46 , according to hospital sources . 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 .
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.