This sounds much too specific to be taken as literal knowledge. More likely it's a strategic ploy calculated to help the girl.
That's a good point and a possibility. However, it still is a strange statement to make about a stranger who is a kidnapper of a child. An act which, in most instances, does not end up with the child being safely returned.
If that was his purpose, it is a clever statement. Final analysis, we have to reserve judgement at this point in time.