Daesh group has accepted a pledge of allegiance to the group made by the Nigerian jihadist organisation Boko Haram,  according to an audiotape Thursday purportedly from its spokesman.
"We announce to you to the good news of the expansion of the caliphate to West Africa because the caliph... has accepted the allegiance of  our brothers of the Sunni group for preaching and the jihad," Daesh spokesman Mohammed al-Adnani said in the message, using the name in Arabic of the Nigerian group.
Itself a radical Sunni Muslim movement, Daesh has seized large swathes of Iraq and Syria and declared an Islamic "caliphate" there, and has also drawn expressions of allegiance from jihadists in Egypt and Libya.