The head of the French internal security service has denied suggestions that authorities "missed" the Toulouse gunman because he was a police informer.
Bernard Squarcini took the unusual step of intervening personally to quash speculation that Mohammed Merah was a "snout" for one of his own agents in Toulouse.
Paradoxically, however, the allegations, including stories in the Italian and French regional press, began with a remark by Squarcini himself. The speculation has since been amplified following comments by a retired head of one of the two French security services merged under Squarcini's control four years ago.
Last Saturday, the day after Merah, 23, was shot while resisting arrest, Squarcini told Le Monde that the killer had asked, during his 32-hour siege, to speak to a Toulouse-based officer in his agency, the Direction Centrale du Renseignement Intérieur (DCRI).
It was this agent who interrogated Merah when he returned from a two-month visit to Pakistan in November.