Boko Haram, an Islamic terrorist organisation, is said to have abducted up to 500 women and children in an act of vengeance while fleeing a town in northern Nigeria during a counter offensive by Chad’s army. Last April, the same group kidnapped at least 200 schoolgirls. Abubakar Shekau, the leader of Boko Haram, has repeatedly expressed his intent to sell his captives into slavery.