New video shows fighters cutting off the heads of eight Shi'ite Muslims . Hostages were said to beheaded in the central Syrian province of Hama . The boys lead each hostage into a field before handing knives to fighters . Nusra Front has said the video is authentic .
New video shows fighters cutting off the heads of eight Shi'ite Muslims . Hostages were said to beheaded in the central Syrian province of Hama . The boys lead each hostage into a field before handing knives to fighters . The Syrian Observatory for Human Rights has said the video is authentic .