There are further local newspaper reports here in Berlin.
They tell us, that there are speculations, that some italian scanner "amateur radio operator" listened to the communication a/c <-> atc, misinterpreted something, informed the police who decides to inform the italian airforce and the whole trouble started . . .
edited to add the link.
here is a link (sorry, in german):
http://morgenpost.berlin1.de/inhalt/...ory642534.html