Militants fighting for the Islamic State in Iraq have released gruesome new images of alleged thieves having their hands hacked off in front of crowds bloodthirsty onlookers. The photographs were taken in ISIS stronghold Mosul and show in gruesome detail how the terrorists pump their victims full of drugs before using a massive meat cleaver to cut off the hands. Hundreds of people are seen lining the streets of the oil-rich city to get a better view of the barbaric act, which is carried out by several masked militants led by a white-bearded elderly man named Abu Ansar al-Ansari, who appears to be orchestrating proceedings. Depraved: One elderly militant known as Abu Ansar al-Ansari does not cover his thick white beard as he oversees the alleged thief's hand being hacked off from his arm . Preparation: The photographs were taken in ISIS stronghold Mosul and show in gruesome detail how the terrorists pump their victims full of drugs before using a massive meat cleaver to cut off the hands . Hundreds of people are seen lining the streets of the oil-rich city to get a better view of the barbaric act . Photographs of the horrific punishments are being shared by pro-ISIS social media users, who use the Arabic file sharing website Nasher to exchange images of the terror group's latest atrocities. The images begin by showing charge sheets carrying ISIS' chilling black and white logo which accuse the prisoners of stealing. Crowds of men are then shown lining the streets to witness the savage punishments, with young boys clambering on to their father's shoulders in order to get a better view. Keeping the baying crowd in line are dozens of heavily armed militants, who wear military fatigues as they stand facing the onlookers in an intimidating fashion. The next shots showing in gruesome detail the medical preparation for the sickening amputations. The men's arms are pumped full of drugs and wrapped in tight bandages both to lessen the agony of the sickening act and to reduce the amount of blood flowing from the open wound. Getting ready: The men's arms are pumped full of drugs and wrapped in tight bandages both to lessen the agony of the sickening act and to reduce the amount of blood flowing from the open wound . Grim: The photographs of the horrific punishments are being shared by pro-ISIS social media users, who use the Arabic file sharing website Nasher to exchange images of the terror group's latest atrocities . Sick: Images of the actual amputation itself show militants crowding around the victim, while ropes are used to pull his arm taut and allow the cleaver-wielding jihads and clean strike . Bloodthristy: Crowds of men are shown lining the streets to witness the savage punishments, with young boys clambering on to their father's shoulders in order to get a better view . Images of the actual amputation itself show  militants crowding around the victim, while ropes are used to pull his arm taut and allow the cleaver-wielding jihads and clean strike. While most of those involved cover their faces, one elderly militant known as Abu Ansar al-Ansari does not cover his thick white beard as he oversees the entire atrocity. The distinctive fighter has become notorious in recent months after appearing in numerous videos released by ISIS showing their barbaric acts. After having his hand hacked off, the victim is seen receiving medical treatment to ensure the wound does not become infected. His arm is wrapped in thick bandages and more anaesthetising drugs are seen being pumped into his body to numb the pain before he is driven away from the crowds in the back of a van. Agony: After having his hand hacked off, the victim is seen receiving medical treatment to ensure the wound does not become infected . The photographs show in gruesome detail the medical preparation for the sickening amputations . A man is seen recuperating after having his right arm hacked off by militants from the Islamic State . Taken away: The man's arm is wrapped in thick bandages and more anaesthetising drugs are seen being pumped into his body to numb the pain before he is driven away from the crowds in the back of a van . The images emerged just days after similar photographs taken in the terror group's de facto capital Raqqa showed a terrified young man being dragged into a public square to have his hand cut off. The blindfolded victim was forced to sit in a chair in the centre of the square, where he was held in place by one of the jihadis, while two others use a cleaver to brutally sever his hand from his arm. The horrific images were shared on the Twitter page of the local  activist group Raqqa Is Being Slaughtered Silently, who work undercover in the city to expose the atrocities committed by ISIS. The four photographs are high quality shots and carry the distinctive yellow branding of ISIS' Al-Hayat Media Center, suggesting they may be stills from an as-yet unreleased propaganda video. Militants fighting for the Islamic State in Syria have thrown yet another young man  to his death from a building after accusing him of being gay. Stomach-churning photographs show a large bloodthirsty crowd gathered at the foot of a multi-storey building in the group's de facto capital Raqqa to watch the murder of the young victim. With the baying crowd clambering on to rooftops to get a better view of the savage scene, the blindfolded man is dragged to the roof of the tallest building in the neighbourhood by bearded militants, who use mobile phones to film him being barbarically thrown to his death. Barbarians: Militants fighting for the Islamic State in Syria have thrown yet another young man to his death from a building after accusing him of being gay . Horror: The blindfolded man is dragged to the roof of the tallest building in the neighbourhood by bearded militants, who use mobile phones to film him being barbarically thrown to his death . Sick: The stomach-churning photographs show a large bloodthirsty crowd gathered at the foot of a multi-storey building in the group's de facto capital Raqqa to watch the murder of the young victim . The images were released by local activist group Raqqa is Being Slaughtered Silently, who work undercover in the ISIS stronghold to expose the terror group's atrocities. The photographs carry the distinctive yellow logo of ISIS' propaganda wing Al Hayat Media Centre, suggesting they come from an as-yet unreleased video of the savage murder. The photographs shows a huge crowd gathering at the foot of a run-down building in the west of the city, which ISIS captured in early 2014 amid the ongoing chaos of the Syrian Civil War.
Photos taken in Mosul show ISIS militants exacting harsh punishments . Men are seen having their hands hacked off with massive meat cleavers . Images show in graphic detail the medical preparation for the brutal act . Victims are pumped full of drugs to reduce the agony of the punishment .