The leader of Boko Haram on Monday threatened to sell more than 200 schoolgirls his Islamist militant group kidnapped in northeastern Nigeria last month.
Boko Haram militants stormed an all-girl secondary school in the village of Chibok, in Borno state, on April 14 and packed the teenagers, who had been taking exams, onto trucks and disappeared into a remote area along the border with Cameroon.