PARIS (AP) -- Germany's top security official says a Syrian passport found with one of the Paris attackers may have been false flag intended to make Europeans fearful of refugees.
Germany's interior minister, Thomas de Maiziere, told reporters in Berlin that it was "unusual that such a person was faithfully registered in Greece, Serbia and Croatia, even though we're usually pressing for registration to take place and lament that it isn't always done properly."
He said the multiple registrations by a person using the passport were "evidence that this was a trail that was intentionally laid, but it can't be ruled out at the moment that this was an IS terrorist who came to France...via Germany as a refugee."
German police have also released seven people arrested near the western city of Aachen in connection with the investigation of the attacks.
The dpa news agency quotes an unidentified police official as saying checks found that none had links to the attacks.
Germany's Interior Minister Thomas de Maiziere had earlier told reporters authorities acted on a tip that one of those arrested might be a key suspect, "but sadly it's not the man that everyone hoped it would be."