Plane was an Alitalia Express ATR-72, flight AZ1128 from Ancona Falconara (AOI
) to Rome FCO
Apparently the Carabinieri received an anonymous call warning about a bomb on board the plane, and a suspicious-looking packet was found hidden under a seat; it was disguised as a life jacket. Passengers had not boarded yet, so the packet was taken to a remote zone of the airport and made explode. The bigger-than-expected deflagration confirmed that it contained explosives.
Right now the aircraft is stuck at Ancona at disposal of the local authority.
More info (in Italian) here: http://www.ansa.it/fdg01/200306122241109635/200306122241109635.shtml
[Edited 2003-06-13 00:53:41]