Via AP (h/t DW):
Approximately 85 Frenchmen have been training with the Pakistani Taliban in the North Waziristan tribal area for the past three years, according to the intelligence officials, who spoke on condition of anonymity because they were not authorized to talk to the media. Most of the men have dual nationality with France and North African countries.
The Frenchmen operate under the name Jihad-e-Islami and are being trained to use explosives and other weapons at camps near the town of Miran Shah and in the Datta Khel area, the officials said. They are led by a French commander who goes by the name Abu Tarek. Five of the men returned to France in January 2011 to find new recruits, according to the officials. It's unclear whether Merah was among that group.