The Nigerian militant group
In the images, delivered to news organizations and posted on YouTube on Monday, about 100 girls are shown covered in gray and black veils and reciting in Arabic. It was not clear where or when the video was recorded.
An estimated 276 schoolgirls have been missing since April 14, when gunmen stormed their school in Chibok, in Nigeria's northeastern Borno state, and drove off with them in trucks. At least 53 girls have managed to escape, according to police.
Boko Haram’s leader,
Nigerian Interior Minister Patrick Abba Morro rejected the offer of a prisoner exchange, telling the BBC that it was "absurd" for a "terrorist group" to try to set conditions.
The mass kidnapping and the government's failure to rescue the girls has provoked outrage in Nigeria, a country of 170 million divided between the predominantly Muslim north and mainly Christian south. Last week, Nigeria accepted offers of help from the United States, Britain and other countries.