London: The dead bodies of 230 people believed to have been slain by the Islamic State (IS) have been found in a mass grave in eastern Syria, an international monitoring group said.
The London-based Syrian Observatory for Human Rights said that the bodies probably belonged to the members of a tribe that fought the terror group in Deir al-Zour province in the summer, reported the BBC.
The United Nations had also said last month that it had received reports of mass slaughter in the region in August.
Investigators said that the mass slaughter appears to have been perpetrated by the IS in a struggle for control of oil resources near the town of Mohassan.
The mass grave was discovered after the tribe, the Sheitat were allowed to return home by IS leaders.
A video posted online by the terror outfit has also indicated that the IS had conducted mass beheadings of fighting-age Sheitat tribesmen.