BEIRUT: The leader of ISIS has allowed members of the Sheaitat tribe in the Syrian province of Deir al-Zor to return to their homes after hundred of its members were killed during an aborted uprising this summer, an activist group said Thursday.

The Syrian Observatory for Human Rights, a Britain-based anti-regime group, said Abu Bakr al-Baghdadi made the announcement after a series of meetings between ISIS leaders and tribal elders.

The Sheaitat rose up in August after they claimed a “non-aggression” pact with ISIS was violated by the jihadists when they swept through areas of Deir al-Zor province. When several members of the tribe were detained by ISIS militants, in violation of the pact, hundreds of tribesmen launched an uprising, which was ruthlessly suppressed by ISIS.

The Observatory said at least 700 hundred members of the tribe were hunted down and summarily executed, often by decapitation, while many of its members fled to other areas of the eastern province. It added that the fate of “hundreds” of members of the tribe remained unknown.

According to the Observatory, ISIS laid down seven strict conditions for a return by tribe members, among them a total handover of weapons, a pledge to turn in anyone who fought against ISIS, a ban on all types of “meetings and gatherings,” and a two-month, 8 p.m. to 5 a.m. curfew in the villages of the “repentant” members of the tribe.