My late spouse was from another country and owned property there. I allowed my brother in law to be my P.O.A., to handle that business as I could not go to said country. I haven't heard anything from anyone in 2 years. I am in West Virginia and my in laws are in Texas.
Of all the categories you chose, maybe the best one to start with could be to contact an estate planning/probate attorney. They could probably assess what kind of investigative/legal resources are needed. You could look up such attorneys here (Find-a-Lawyer, above), or through your own independent efforts. Good luck
Tim Akpinar
