The train that derailed and exploded in Lac-Megantic, Canada, had been parked and the conductor was not aboard when "somehow, the train got released".
"We're not sure what happened, but the engineer did everything by the book. He had parked the train and was waiting for his relief", Montreal, Maine and Atlantic Railway, Inc Vice President Joseph McGonigle said.
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A woman from Gloucester who was conned out of £5,000 is warning others not to fall victim to the same scam.
A £199 billion Private Finance Initiative bill will need to be footed by the taxpayer, even if there are no further deals struck.
Top temperatures of 9 Celsius (48 F).