Boko Haram has released a video appearing to show more of the Chibok schoolgirls who were kidnapped by the Islamist group.
In the video, a Boko Haram militant can be seen standing before approximately 50 girls dressed in headscarves. Addressing the camera, he demands the release of the group's fighters in exchange for the girls' freedom.
He claims five of the Chibok girls were killed by Nigerian military jets during an attack on the group's compound.
The man, whose face is obscured, adds: "They should know that their children are still in our hands."
It is understood the girls featured in the video are with a breakaway faction led by group leader Abubakar Shekau.
This is the third video to be released of the girls since their capture more than two years ago.
The school girls were kidnapped by the Nigerian terror group in April 2014 sparking worldwide outrage.
Militants stormed the Government Secondary School in Chibok, Nigeria.
276 girls were taken by the militants. 57 managed to escape over the course of the ensuing months, however the majority remain unaccounted for and are believed to remain in captivity.
Those who escaped claimed some of the non-Muslim girls had been forced to convert to Islam, while others have been forced to marry Boko Haram members.
The mass kidnapping caused outrage around the world and sparked the 'Bring Back Our Girls' campaign which received support from leading public figures including US First Lady Michelle Obama and human rights activist Malala Yousafzai.
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