Nigeria prison uses sport to reform Boko Haram members
11 September 2015 Last updated at 06:15 BST
Nigeria has launched several programmes to try and reform captured members of the Boko Haram group.
The violent extremist group has been active in the north-east of the country, as well as across the border in Chad, Niger and Cameroon.
Will Ross reports from a prison in Nigeria where sport is used to help tackle extreme views.