At least 31 people were killed in two suicide bomb attacks in Nigeria this week.
According to reports the attacks took place late Tuesday afternoon at busy markets in the cities of Yola and Kano, injuring a further 72 people.
One of the alleged attackers was an 11-year-old girl while the other was said to be 18.
There was no immediate claim of responsibility but officials will likely pin the blame on the armed group Boko Haram which has killed thousands in its bid to create a state adhering to Islamic law in the northeast.
The group has previously attacked Yola with suicide bombs and improvised explosive devices.
Tuesday's bombing came less than a month after at least 55 people died when suicide bombings struck two mosques in different cities in northeast Nigeria.