The Islamic State released a video on Sunday appearing to show the killing of two groups of Ethiopian Christians captured by ISIS’s Libyan affiliates, the Guardian reports. The 29-minute-long video shows a group of around 15 men being beheaded in one location and another 15 being shot in the head elsewhere.

According to the New York Times, the killings appear to take place in Libya, while footage of speeches and interviews appear to have been filmed in the Islamic State strongholds of Syria and Iraq:

The footage of the killings, if confirmed, would be the first evidence that the group’s leaders in those countries are coordinating with fighters who have taken up the group’s banner in those parts of Libya, compounding fears of its expansion across the Mediterranean.

In February, Egyptian President Abdel Fatah al-Sisi ordered air strikes against ISIS targets in Libya in retaliation for the beheading of 21 Egyptian Coptic Christians captured there.

In the new video, the Times reports, a masked figure speaking American-accented English points a revolver toward the camera. “You will not have safety even in your dreams, until you accept Islam,” he says. “Our battle is a battle between faith and blasphemy, between truth and falsehood.”

Update, 4:30 p.m. – The second paragraph of this post has been changed to clarify the fact that the killings appear to have been filmed in Libya, while other parts of the video were filmed in Syria and Iraq.

Image via AP. Contact the author of this post: brendan.oconnor@gawker.com.