Ruthless ISIS militants throw 'gay' man off building then stone him to death when he survives fall

This is the horrifying moment sick ISIS militants threw a 'gay' man off the roof of a building then stoned him to death as he lay badly injured on the ground.

The blind-folded man was held at the top of the tall block somewhere in Iraq while his captors took pictures of his final moments on mobile phones.

Below, hundreds of people gathered to watch the shocking killing.

Somehow the victim survived the fall from the building, but he was then pelted with rocks by a crowd of armed men.

In March justice IS-style has also seen two men beheaded for blasphemy and dishonesty and a man stoned to death for adultery in the same week.

A man named Muhammad Aladdin was pictured having his head chopped off for being a 'swindler' in front of a crowd of locals.

More disturbing images showed a Jihadist with a giant Scimitar-style sword execute a man called Abdul Latif Ajjur.

This time, onlookers were told he was guilty of cursing God.

Public executions are rife with the group who rule parts of northern Iraq and Syria with an iron fist, meting out the harsh punishments for actions they see as violating their interpretation of Islamic law, such as adultery, stealing and blasphemy.

The regime recently beheaded an innocent man in Syria for entertaining beleaguered citizens with magic tricks just like global superstar Dynamo.

And earlier this year in Iraq Islamic State killers butchered 13 football fans for tuning into watch Iraq take on Jordan in the Asian Cup.

Earlier this year SIS released a video showing one of its snipers carrying out a series of assassinations following the success of hit film American Sniper.

The heavily edited footage shows the sniper - who remains anonymous - killing a series of opposition fighters .

In some scenes, red targets appear on the victim to highlight who the sniper is targeting.

A computer-generated rifle scope also appears during the footage.

It is thought the three-and-a-half minute video - which shows the deaths of 12 people - is in response to the Hollywood blockbuster starring Bradley Cooper.