Here is some more information that focuses on the man who was killed in Syria who is said to be a master bomb maker for the muslims.
First, an interview with his mother:
The translator left this note under the translation for us:
They were a catholic family living in Brittany (northwest france) then the parents got divorced, both sons converted to Islam, David converted when he was only 14, and the mother converted due to pressure from her son and from the muslim community in which they lived.
Apparently Drugeon, an expert in bomb-making, met up with Mohamed Merah, who trained in shooting, in Pakistan in Sep. 2011 with an al Qaeda cadre. “It is possible Drugeon helped inspire the terrorist shootings in southern France. Besieged in his apartment in Toulouse in a final stand before his death, told French negotiators over a walkie-talkie that “an al Qaeda brother” in Pakistan who had spent time in France helped persuade him to return to France to launch attacks.”
http://www.cnn.com/2014/10/31/world/meast/syria-khorasan-bomb-maker/