Nigerian troops rescued over one hundred "sex slaves" from Boko Haram last week.
Sexual slavery and the selling of women is permitted by the Koran, therefore it is practised by Muslim insurgent groups.
The women were taken to a camp where they were supposed to be safe from further Muslim attacks. But yesterday, suicide bombers, murdered 58 people inside the camp itself.
Suicide attacks are rare in history. One example is the Japanese Kamikaze pilots. In Islam, the Koran promises rewards in the afterlife for such people, therefore suicide attacks are common in Islamic wars.
http://edition.cnn.com/2016/02/11/africa/nigeria-suicide-bombing-boko-haram/