Case closed.
Reason: Showing Pokemon caught about several months back and claiming that they caught it a few days ago with the shiny zorua in a non-zorua spawning tile. No zorua tiles were found in 5 tile radius from the claimed location. After finding that their zorua was old, they attempted to find the zorua they meant and that went missing too it.
No proofs and logical reasoning behind this. Do not waste our time again.