Abubukar Shekau
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Boko Haram pledges allegiance to Islamic State

Boko Haram militants in Nigeria are reported to have pledged allegiance to the Islamic State group.

The announcement was made in an audio message - believed to be of the movement's leader, Abubukar Shekau - released on a Twitter account used by the group.

Jim Muir reports.

  • 07 Mar 2015
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