(DAILYSTAR) — BEIRUT: The ISIS group has killed 1,878 people in Syria during the past six months, the majority of them civilians, a British-based Syrian activist group said Sunday.

ISIS also killed 120 of its own members, most of them foreign fighters trying to return home, in the last two months, according to the Syrian Observatory for Human Rights.

The latest summary executions reported by the Observatory and local activists have come in the eastern part of Syria. Video footage of the execution by gunshot at close range emerged over the weekend, purporting to show ISIS militants killing a member of the rival Nusra Front, and a civilian, in the town of Al-Bukamal.

Note: Read our discussion guidelines before commenting.