Former Boko Haram captive tells her story

Two years ago the Islamist militant group Boko Haram kidnapped hundreds of Nigerian schoolgirls.

Despite a worldwide campaign 219 girls are still missing, but their case is not unusual. Thousands of women have been enslaved by the group.

Alastair Leithead travelled to the town of Yola to meet one girl who managed to flee her captors.