You maybe getting the point there. This incident sounds a lot like an inaccurate Wifi locating result.

Or someone in a large stolen-phone operation has been using a randomly picked MAC address to confuse the Find-My-Phone softwares. That's a lot easier to do.

I bet someone at Google or Skyhook could look into the Mac address to see if there are any abnormalities for that particular one.

I really hope Sherlock Holmes will be there to resolve the mystery.