This guy is an agent of a terror group. He has worked very hard to appear to be a ghost, but I would bet he had another computer with another identity somewhere.
Not one single bit of evidence picked up so far leads to a group idea. I do admit...several bits do point to money-laundering being part of his lifestyle for a number of years...but he was obviously smart enough to avoid IRS detection or audits.
This guy is an agent of a terror group.
...
In any case he wanted to kill a large number of people somewhere in America.