I discovered the story originally while absentmindedly Googling about Earhart a few months ago (when I can't sleep I read about curious historical mysteries; Black Dahlia, DB Cooper, etc. Then I have a harder time sleeping!).

It could be hogwash, all built around rumors:

https://pacificwrecks.com/aircraft/electra/earhart/

http://www.ameliaearhartmovie.com/briefcasefoundinsaipan.htm...