Nigeria army 'knows where Boko Haram are holding girls'

The Nigerian military says it knows where the girls kidnapped by Boko Haram are, but will not attempt a rescue.

Nigeria's Chief of Defence Staff said it was "good news for the parents," although he admitted the military would not risk "going there with force".

More than 200 girls were abducted by Boko Haram gunmen from their school in April.

Will Ross reports from Abuja.