Pics are not working for me. Would you mind reuploading them to imgur or something like that?

Thank you for sharing this!

I joined using your link so now you need to accept it.

I don't speak any spanish so I am pretty useless in this case.

But I would recommend you to try to find as many public databases as possible for Mexico or the for the specific region/city the suspect lives in and check all the names you know are connected to him. If you don't find anything on him specific try to find persons connected to him in any way.

Maybe there are some spanish speakers around here who might be willing to help doing this?

I wish you and especially your family member all the best!

is this the same as the one you posted before?

No it is not. I kept developing and expanding my ideas. The first post was a simple "do this  and then do that" type of thing. This one is focused on enabling you to develop a strategy that you feel comftable with in terms of risk taking, profits and speed.