While not confirmed as authentic yet, ISIS has released yet another video. This time, they are claiming to have killed 30 Ethiopian Christians in Libya.

During the last five minutes of the half-hour video, the video cuts back and forth between scenes in the southern desert and a beach along the coast, at one point displaying both with a split screen. Both were filmed with the same sophisticated camera angles and editing that have distinguished other Islamic State films from indigenous Libyan videos.

Masked fighters lead a row of bound captives dressed in black into the desert and then shoot each of the prisoners in the back of the head. Another group of masked fighters leads a row of prisoners in orange jumpsuits along a beach and then beheads each of them with a long knife. The video shows fighters placing the severed heads on the bodies lying on the sand as bloody surf washes over them.

“You will not have safety, even in your dreams, until you accept Islam,” declares a masked figure, speaking English with an American accent and pointing a revolver at the camera. “To the nation of the cross: We are back again.”