Terry Knowles, who witnessed the plane crash in Fort Lauderdale, Florida, told the Associated Press the aircraft was "an instantaneous fireball" when it hit the ground.
Mr Knowles said:
I was working on a car, and I heard the engine behind me. I turned around and saw the plane coming right over the building in front of me.
It hit the ground and exploded. It was an instantaneous fireball.
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The boy was found unconscious and in cardiac arrest and was rushed to hospital where he died.
The victim, who was wearing her uniform at the time, was found knocking on doors nearly four hours after she was abducted.
There will be gales across Scotland and northern England this morning, but these will gradually ease through the afternoon.