An oil rig worker off the coast of Vietnam claims to have seen the Malaysian 777 on fire, flying perpendicular to the normal flight routes in that area.
He describes seeing what he believes to be the plane burning — in one piece — at high altitude, flying perpendicular to the standard plane routes that cross over the area. "From when I first saw the burning (plane) until the flames went out (still at high altitude) was 10-15 seconds. There was no lateral movement, so it was either coming toward our location, stationary, or going away from our location," he writes.
Still sounds a little sketchy, but it could be the first evidence that something catastrophic occured on Flight 370.