The grisly images all appear to come from an Islamic State video that is not included on the web page on which the photos were posted. The photo site states that it was created January 15 by an organization that calls itself “The Ninevah Province Media Center” and bears the logo and flag of the Islamic State.

The first still image shows a crowd gathered on a square on a cloudy day. The shot is taken from the top of a brown building that appears to be seven or eight stories high. The caption at the bottom of the screen says, “The Muslims come to watch the application of the law.”

The text at the bottom appears to reference the prisoner as “one of Lot’s people.” The reference is to the biblical inhabitants of Lot’s towns of Sodom and Gomorrah, whose people sinned and were punished by God in the Old Testament for committing sexually deviant acts.

Some Muslims say the Prophet Mohammad said that homosexuality should be punished with death.

The next photo is horrifying, and shows the man in mid-air, falling from the building, with the body of another man on the concrete below him.