MEET THE BRITISH NHS HORMONE EXPERT WHO ABANDONED HIS FAMILY AND MEDICAL PRACTICE TO JOIN ISIS

The first British NHS doctor to join ISIS in Syria has been revealed thanks to leaked ISIS recruitment papers.

Issam Abuanza, 37, allegedly left his wife and two children behind in Sheffield when he fled the UK in 2014. 

He had been a practising doctor with the NHS for seven years, after he received his licence to practise medicine in the UK in 2009, according to a BBC investigation. 

Shocking images posted on social media appear to show Abuanza wearing an army uniform and clutching an AK-47 while reading the Koran. 

Another photograph shows him wearing doctors' scrubs with a gun in a holster slung over one shoulder.

'Soldier': Issam Abuanza has been revealed to be the first practising NHS doctor to leave the UK to join ISIS in Syria, after ISIS registration documents were leaked

The father-of-two turned ISIS fighter has reportedly been condemned by his own sister after the truth about his 'path to terror' emerged.   

‘He used to be quite the dashing young man, very modern. I’ve no idea how he became like this or who showed him the path to terror,' his sister Najla told the BBC.

‘They will never forgive him. My dad’s wish was to see him before he dies. He has spent all his money on him and his education and this is what he does.’ 

A Palestinian doctor with British citizenship, Abuanza is said to have filled in ISIS registration forms when he crossed into Syria to join them on July 26 2014.

According to the forms, as seen by the BBC, he said he was a doctor specialising in endocrinology - which deals with the diagnosis and treatment of diseases related to hormones. 

On his form to enter the terror group, he was reportedly asked if he wanted to be a commando, a suicide bomber or a soldier, to which he answered ‘a soldier’. 

Up until October 2015, when he stopped posting, Abuanza was very active on social media, frequently writing messages in support of ISIS and attempting to recruit other British medics. 

He used to be quite the dashing young man, very modern. I’ve no idea how he became like this or who showed him the path to terror. 

In January 2015, he wrote a Facebook post celebrating the Charlie Hebdo terror attack in Paris, in which 12 members of staff from the satirical magazine were murdered. 

'Praise be to God for this terrorist act,' he wrote. 'God kill off their enemies, military and civilian, men and women, adult and children.' 

In February 2015, he wrote another post about the death of the captured Jordanian pilot who was murdered by ISIS fighters. 

In the chilling post, he said that he would have wanted to heal the victim so they could kill him all over again.

'I would've liked for them to burn him extremely slowly and I could treat him so we could torch him once more,' he wrote.

In another post online from March 2015, he celebrates when 11 British medical left their studies in Sudan to join him in Syria. 

‘Just two days ago I was the only doctor in the ambulance, and I was very shocked and sad,' he wrote.