Did Paris attacker pose as a refugee?
17 November 2015 Last updated at 00:37 GMT
Ahmad al-Mohammad, from Idlib in Syria, has been named as one of the attackers involved in Friday's terror attacks in Paris.
His was the name on a Syrian passport found with the remains of one of the attackers, though the man's identity has not yet been verified.
It is believed he entered mainland Europe after arriving by boat on the Greek island of Leros, like many refugees fleeing Syria's civil war.
Ed Thomas visited the site where he was registered and had his fingerprints taken.