Abubakar Shekau
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Who is the man leading Boko Haram?

27 June 2014 Last updated at 06:37 BST

The Nigerian militant Islamist group Boko Haram has come to international prominence after abducting more than 200 school girls, but what do we know about its leader?

Abubakar Shekau has inspired his group of fighters to kill hundreds of people in Nigeria, where Yalda Hakim spoke to people who knew him.