The appalling new footage shows the moment ISIS fighter tied a prisoner upside down on a tree and shot him in the head.
Legs of the prisoner dangling from the tree
Sickening new footage has emerged showing ISIS militants stringing a prisoner upside down before executing him at point blank range.
The terrorists shoot the man, who they claim is a 'traitor', in the head and shoulder in the stomach-churning new propaganda video where they made threat against Tunisia.
The 11-minute clip is dubbed 'A Message to the Monotheists After the Bombing of the Apostates in Tunisia'.
It also shows jihadis in training and participating int weapons drills.
The video comes as police in Tunisia say they have cracked an ISIS terror cell planning large-scale atrocities on tourists over New Year's Eve .
A total of 25 suspects were rounded up in the city of of Sbiba last night. They included a child believed to be aged just 14 who joined as a potential suicide bomber.
ISIS fighters practice their shooting skills before stringing up 'traitor' by his feet to a tree and shooting him in the head
According to the Tunisian government, they were plotting a series of attacks over the upcoming holiday period.
The targets were set to be tourist areas and government buildings on New Year's Eve, it was reported. Police stations were also to be attacked.
See video below....