An unidentified man with his head covered, believed to be Abdelkader Merah or his companion, sits between masked police officers as they head to the French police's anti-terrorist headquarters in Levallois-Perret, outside Paris, Saturday, March 24, 2012. Merah's brother, Mohamed Merah is blamed for a series of deadly shootings which have shocked France and upended the country's presidential race. (AP Photo/Christophe Ena)

Photo by: Christophe Ena

An unidentified man with his head covered, believed to be Abdelkader Merah or his companion, sits between masked police officers as they head to the French police's anti-terrorist headquarters in Levallois-Perret, outside Paris, Saturday, March 24, 2012. Merah's brother, Mohamed Merah is blamed for a series of deadly shootings which have shocked France and upended the country's presidential race. (AP Photo/Christophe Ena)