This afternoon we’ve tracked a unidentified aircraft descending to NAS Sigonella. The ICAO hexcode indicated (33FD6B) is Italian but probably is a mistake.
Observing the route, the altitude (over 50k feet) and the speed (350 knot) of the aircraft it seems an USAF Northrop Grumman RQ-4B “Global Hawk” following the typical approach route to Sigonella.
The drone was back probably from a surveillance mission over western Libya and is landed around 19:50 CEST.