Pretty much... if someone is holding a PR status or a Japan passport -- then that's exactly what happens. I'm assuming that he's been stopped before and he must have shown some sort of ID, otherwise he wouldn't be out on the street.
If no valid ID > taken to local police box/station > once nationality/status is determined > (ok: released, not ok: immigration gets involved)
Understood. That's a good point... I think it's fair to say either Asian or Caucasian as a base point.
what if he doesn't tell them his nationality.. where do they deport him to?