Murders in Toulouse Authorities Helpless to Prevent Lone Wolf Attacks

A man like Mohammed Merah is Western law enforcement's worst nightmare. The suspected perpetrator of the Toulouse attacks fits into the "lone wolf" category of terrorist. Such individuals claim to be part of organizations like al-Qaida but act on their own initiative -- making them hard to detect before they act.
French police and firefighters around the Toulouse apartment building where Mohammed Mareh was holed up on Wednesday

French police and firefighters around the Toulouse apartment building where Mohammed Mareh was holed up on Wednesday

Foto: REMY GABALDA/ AFP
Photo Gallery: Siege in Toulouse
Fotostrecke

Photo Gallery: Siege in Toulouse

Foto: Remy de la Mauvinere/ AP