Very thing happened to Nikola Tesla. I've been reading through his FBI files recently. Apparently they sent out "alien asset seizure" or some foreign collection agency to his hotel room after his death and broke into his safe, found all of his notes and locations for supplies. The ordeal is that Tesla was US citizen at the time. So what jurisdiction did that agency have? The given reason is that they could gather his work faster than any other agency. Which doesn't support their foreign affairs but for some reason that's totally fine.

Mind you, Teslas end of life work revolved around stuff of fantasy- transmission of wireless energy. Or stuff that could seriously hurt profits for almost every big name out there.