More details have emerged about a suicide bomb attack on a refugee camp in north-eastern Nigeria.
Earlier this week, two female suicide bombers killed more than 60 at a camp in Borno state.
It houses people fleeing the insurgency by Boko Haram extremists in the northeastern town of Dikwa.
News of the attack filtered through slowly due to poor communications in the region.
Third bomber “recognised family”
Officials say a third female kamikaze refused to detonate her device when she realized that her parents and siblings were in the camp.
They say she turned herself in and warned of further attacks planned in the region.
Officials say 78 people were injured in the attack.
So far, no group has admitted being behind the attack.
However, it bears all the hallmarks of Boko Haram.
The group has frequently used women and even children to hit its targets.