Boko Haram video 'shows Chibok girls'

Jihadist group says 40 of those abducted married and some killed in govt airstrikes

Nigerian extremist group Boko Haram has published a video showing recent footage of dozens of schoolgirls kidnapped two years ago, and saying some of them have been killed in airstrikes.

Boko Haram seized more than 270 girls from their school in Chibok, northeast Nigeria, in April 2014, part of a seven-year-old insurgency to set up an Islamic state in the north that has killed some 15,000 people and displaced more than 2 million.