A French journalist says that he successfully infiltrated a group of ISUIS supporters before they were arrested, AFP reports.
The journalist, who went by the name Said Ramzi, filmed his "comrades" using a hidden camera. The results of which will be shown in a documentary called Allah's Soldiers tonight (Monday).
Ramzi is himself Muslim and says that he is "of the same generation as the killers" responsible for last November's attack in Paris.
"My goal was to understand what was going on inside their heads," he explained.