Boko Haram -- whose name means `` Western education is sacrilege '' -- has killed more than 2,800 people in an escalating campaign to impose strict Islamic law on largely Muslim northern Nigeria , according to Human Rights Watch . ` ` This was an act of cold - blooded murder , '' British official said . The girls had been abducted from a construction company office in February . Their families blame a raid ; Britain says blame ` ` placed squarely with the British ''
` ` This was an act of cold - blooded murder , '' British official said . The girls had been abducted from a construction company office in February . Their families blame a raid ; Britain says blame ` ` placed squarely with the British ''