Since the start of Boko Haram's insurgency thousands of boys and girls have gone missing across north eastern Nigeria. The Islamist group use the kidnap of children as a strategy in their asymmetric war. Girls, as young as eight, are taken to be married off to fighters or deployed as sex slaves and, increasingly, used to commit suicide attacks.
Sunday (18): 'At first they were mainly looking for young men and boys. Some boys even started wearing women's clothes to disguise their true gender. If they were exposed, they were shot immediately. At one time all the girls were rounded up and locked up in the school. Some young girls were taken into the forest. We've never seen again. One night, I remember it was raining hard, our guards slept. I climbed out through a window along with a few other girls. My heart was in my throat, because I was terrified that they would wake up but I was lucky I managed to escape. But both my parents and sisters are still missing.'