He was a reporter from some newspaper on the mainland.
They shut him up quick and got him off the island.
It was a strange crash, the airplane was equiped with a nice auto pilot, it would be hard to crash if JFK were using the resources for NAV and Auto Pilot correctly.
The Aircraft was recovered and crushed to bits, no one outside the "investigation" was allowed to view it.
It was a strange crash. Here's an interesting quote from the NTSB investigation report: "In the 15 months before the accident, the pilot had flown either to or from the destination area about 35 times. The pilot flew at least 17 of these flight legs without a CFI on board, of which 5 were at night."
Assuming this part of the NTSB report is correct, then JFK Jr had made the equivalent of about 17.5 round trips over this route. With this level of familiarity with the flight and the terrain, one would think it would be difficult for him to become spatially disoriented. The NTSB investigation of TWA 800 certainly appears to have been corrupted and I wouldn't be suprised if the investigation into JFK Jr's crash was also compromised by the Clinton administration. JFK Jr certainly would have been a formidable opponent for Hillary in the 2000 New York senate race.