A girl comes to a market. This market is in a city in Nigeria. There are a lot of people there. The girl is ten years old. She has a bomb. She is a suicide bomber. The bomb explodes. It kills fourteen peope.
People do not know who did this. Maybe, Boko Haram did this. Boko Haram is a terrorist group in Nigeria.
This attack is not the first one in the city. Six days ago, three policemen died. Before that, another suicide bomber killed nine people.