Although Belgian authorities have yet to formally confirm his identity, friends and neighbours say Abdelmajid Gharmaoui, 28, from the Flemish town of Vilvoorde, is among the savage killers.Known to have been a member of the radical group Sharia4Belgium and with links to radical groups across Europe, Gharmaoui - who now uses the nom de guerre Abu Dujanna - is pictured wearing battle fatigues and a thick black beard as his fellow militants stand over their victims. Earlier another of the killers was positively identified as 22-year-old Frenchman Maxime Hauchard - who friends described as a mild-mannered former Catholic who used to sell scooter parts in Normandy until his conversion to Islam at the age of 17.This morning it emerged that a second Frenchman, Abou Uthman, has been identified among the murderers and - with Jihadi John, another possible Briton and a German also among the lineup - one investigator branded the ISIS execution squad as a 'European union of killers'.Gharmaoui left for Syria in October 2012, saying he wanted to fight jihad, and was last placed in the village of Dabiq, where the sickening video was recorded. Hans Bonte, the mayor of Vilvoorde, said the 'rumour had been circulating for some months' that Gharmaoui was fighting in Syria fighting, adding that the kind of 'heinous acts seen on the video are hugely worrying'.Mr Bonte said there was a huge local problem with 'youths being radicalised' in Vilvoorde, adding that he is introducing a bill to withdraw the travel documents of suspected jihadists who want to travel to war-torn countries such as Iraq and Syria. Confirmation of Gharmaoui's participation in the video - in which the severed head of American aid worker Peter Kassig is also pictured - comes as fresh details emerged about 22-year-old Frenchman Maxime Hauchard, who is also among the group of killers.Dressed in battle fatigues and wearing a thick beard, the once 'ordinary French lad' is seen dragging his victim to the execution site where he and a large group of ISIS militants - including the killer known as Jihadi John - force the Syrian soldiers to kneel before brutally beheading them. Hauchard, who converted to Islam from Catholicism five years ago at the age of 17, appeared on French television in July where he described life as a fighter for the Islamic State in Syria as being 'like a holiday' and said that he was looking forward to dying so that he could become a 'martyr'.Former neighbours in the quiet Normandy village of Bosc-Roger-en-Roumois, where Hauchard grew up, expressed outrage and astonishment at the images of the 22-year-old in the latest ISIS murder video.'It's not the Maxime we knew,' said one, who lives a few doors along from the Hauchard family home, near Rouen.'Maxime did well at school, and we often saw him mowing the lawn or enjoying himself with his friends. He got on with everyone.'He drank alcohol, and liked to party, but was never any trouble to his parents. He was just an ordinary French lad from a Catholic family.' Bakudaily.Az