ISIS militants execute man with anti-aircraft weapon after tying him to post

Syria:   This is the shocking moment an ISIS prisoner was executed by militants with a BAZOOKA after he was tied to a post.

The helpless captive exploded into a ball of flames after being shot with the grenade, designed to take out tanks and aircraft.

The sickening video then shows the blood-thirsting jihadis celebrate and chant 'Allah is greatest' before continuing to blast at the man's dead body.

They then take it in turns to kick the corpse while dancing and cheering.

The video was shared online by anti-ISIS activist group Syria Is Being Slaughtered Silently, which said the prisoner was accused of fighting against ISIS.

The man, named as Ibrahim Shraideh, was said to be a member of the Al Shaitat tribe from the town of Abu Hamam in Syria's Deir ez-Zor province, the Mail Online reports.

It said the militants were from Tunisia and Morocco.

The video comes just a day after Islamic State militants took control of the city of Palmyra, leading to fears that some of the world's most ancient monuments could be destroyed.

Fighters for the terror group seized the Syrian city from government forces during fierce fighting after civilians were evacuated.

It led to Syria's antiquities chief calling on the world to save its ancient monuments.

The central city, also known as Tadmur, is built alongside the remains of a oasis civilisation whose colonnaded streets, temple and theatre have stood for 2,000 years.

Palmyra’s ancient monuments, which lie on the south-western fringe of the modern city, were put on UNESCO’s World Heritage in danger list in 2013. The ruins were part of a desert oasis that was one of the most significant cultural centres of the ancient world.

Islamic State supporters posted pictures on social media showing what they said were gunmen in the streets of Palmyra, which is the location of one of Syria’s biggest weapons depots as well as army bases, an airport and a major prison.

"The news at the moment is very bad. There are small groups that managed to enter the city from certain points," Syria’s antiquities chief Maamoun Abdulkarim said.

Abdulkarim said hundreds of statues had been moved to safe locations but called on the Syrian army, opposition and international community to save the site.