A video from a previously unknown militant group has surfaced on social media showing 18 Turkish workers abducted in Baghdad last week and threatening Ankara with the "most violent means."

The 3-minute video released on Friday shows the men seated in front of five militants in black masks with machineguns. Behind them is a blue wall emblazoned with the group's alleged name, "Death Squads" in Arabic.

Next to the name are the words "Oh, Hussein" — a reference to a revered Shiite figure who was the Prophet Muhammad's grandson, suggesting the group is Shiite.

The group demands Turkey halt the flow of militant into Iraq, stop the passage of oil from Iraq's northern Kurdish region via Turkish territory and lift what's described as a "siege" on Syrian cities.