Evidently there was [1] more than one.

[2] Robert Redeker Update: "Report: Moroccan police arrest man for allegedly threatening teacher in France," from [3] The Associated Press, :

PARIS: Moroccan police have arrested a man suspected of sending death threats to a French philosophy teacher who has been in hiding since September after airing his thoughts about Islam in a newspaper, the daily Le Parisien reported Tuesday.

The paper, citing sources close to the investigation, said the suspect, a Moroccan in his 20s, was arrested Dec. 19 in his home country after returning from a trip to Libya. He was trying to go to Iraq, Le Parisien said....

The article drew death threats on an Internet site considered close to al-Qaida and also menacing e-mails, some containing photos of Redeker, a map of his home and his telephone numbers.