Former friends responded to the post by calling boxer 'scum of the earth'

Said he had not yet used his gun but had witnessed the group's murders

him to patrol an area near the Turkish border looking for smugglers

Boxer turned jihadi: Valdet Gashi, 28, has left Bavaria to join the Islamic State terror group

A two-time world Thai boxing champion has fled Germany to fight for ISIS in Syria where he has admitted attending the terror group's barbaric public executions.

Valdet Gashi, 28, who is married with two children and lived in the state of Bavaria claimed he joined the bloodthirsty terror group to 'help and to look for answers.'

Gashi revealed that he is currently working for ISIS by patrolling the Euphrates River looking for smugglers in an area between Membis and Jarablus near the Turkish border.

Since revealing that he has joined ISIS, Gashi has received a torrent of abuse from his friends and followers.

The kickboxing jihadi revealed that although he has not used had the need to use his gun, he had witnessed the kind of barbaric executions for which ISIS has made its name.

'We are looking for smugglers who bring illegal goods here like cigarettes, alcohol or drugs, which are completely forbidden,' he posted on his Facebook page.

'By the grace of God I have not yet had to use my weapon...The deterrence effect is very big and there have been very few similar cases since,' he added.

Gashi has turned his back on his former life in Singen in Baden-Wurttemberg where he practiced kickboxing and became a European and later world champion.

A former coach of Gashi's said he was shocked to hear he had gone to Syria. 'I never saw the private side of him. As a sportsman he was very normal, but he never spoke about religion in the gym - that was taboo.'

'As a champion boxer he was a model for children. But what he is doing now is no example to set.'

Gashi arrived in Germany as a six-year-old Albanian refugee. He grew up in Neumarkt district of Bavaria where he found success as a kickboxer.

One childhood friend, who did not want to be named, told of their shock he was fighting for ISIS. They described him as 'a prince who everyone on the street knew and greeted.'

'He was extremely approachable, happy and friendly. Someone must have planted these ideas in his head,' the friend added.

Terrorist: Gashi has turned his back on his former life in Singen in Baden-Wurttemberg where he practiced kickboxing and became a European and later two-time Thai boxing world champion

Brutal: The kickboxing jihadi revealed that although he has not used had the need to use his gun, he had witnessed the kind of barbaric executions for which ISIS has made its name (pictured)

After seeing the jihadi's Facebook post, one former friend commented: 'Scum of the earth. Shoot you and your filthy ISIS POS, drop a bomb on your head so u can die in hell.'

But another chillingly wrote: 'Don't let yourself be provoked by such people brother. Trust in Allah.'

Gashi appears not to be bothered by the furore he has caused back home in Germany. He said 'Too many violent comments on my Facebook page* need a banana with honey to relax.'

'If you really knew me, you would know that I wouldn't do something stupid. But anyway....keep insulting me if it makes you happy,' he added.