Why don't you read over the last few posts and you will see the sighting information? It is a courtesy to your fellow posters to read the thread before you ask questions.
And this is a work in progress...we have two sightings in Stockholm airport now that nicely bookmark arrival and departure if they are correct. AND we have Phil in a place where he can spend some time on the Internet, suggesting an extended Pitstop. Our work is just beginning.
So let's go to speculation with further discussion, and maybe some of you all can start trying to research Stockholm photos, blogs etc for us??