NATO says lost drone helicopter in Libya.

BRUSSELS — NATO said it lost radar contact with a drone helicopter conducting a reconnaissance flight over Libya on Tuesday, denying one of its attack helicopters had crashed.
The alliance's command centre in Naples, Italy, lost track of the unmanned autonomous helicopter drone at 0720 GMT, NATO military spokesman Mike Bracken said in a statement.
"This drone helicopter was performing intelligence surveillance and reconnaissance over Libya to monitor pro-Kadhafi forces threatening the civi.......(visit the link for the full news article)

Not an Orca.
The film I saw on the BBC website showed the wrecked craft having an open tail rotor.

Could easily of been brought down by small arms fire (although I didn't see any tell tail bullet holes) or equally mechanical failure, even a bird strike or clipped a telephone wire - probably nothing very important, I bet they take pot shot's at those things every time they see one (I would tee hee) so sooner or later they would get a lucky shot in.