The Islamic State in Iraq and the Levant executed and crucified eight members of rival militant groups in Aleppo, northern Syria, according to the UK-based opposing Observatory.

The Islamic State in Iraq and the Levant executed and crucified eight members of rival militant groups in Aleppo, northern Syria, according to the UK-based opposing Observatory.

"ISIL executed eight men in Deir Hafer in the east of Aleppo province" on Saturday because they belonged rival militant groups," it said.

"ISIL then crucified them in the main square of the village, where their bodies will remain for three days," the Observatory added.

"Also in Aleppo province, a ninth man was crucified for eight hours as a form of punishment in Al-Bab town near the border with Turkey," the Observatory pointed out, "The man survived the ordeal."