James Kallstrom, the man who led the FBI's investigation into the crash of TWA Flight 800 off Long Island's south shore, has died at 78.

His 16-month investigation concluded that a spark in the center fuel tank caused the July 1996 disaster.

The Paris-bound Boeing 747 jet exploded and plunged into the waters off East Moriches shortly after departing John F. Kennedy International Airport, killing all 230 people on board, including 14 Long Islanders.

The 25th anniversary of the explosion will be July 17.