Secret documents disclosed by French police reveal the depth of the surveillance carried out by police on Mohammed Merah, who murdered a rabbi and three children at the Ozar Hatorah synagogue and school in Toulouse and three French soldiers in nearby Montauban.
The documents show that police monitored the movements of Merah as early as 2009. In 2011, they labelled his behavior as "disturbing". His brother, Abd El-Khadr, was already documented by police in 2007 in connection with a network that brought Jihadists from Syria to Iraq. Both brothers were followed by French domestic intelligence.