Police in Canada have opened a criminal investigation into the oil train derailment and subsequent explosion that devastated the Quebec town of Lac-Megantic.
The probe is expected to look into criminal negligence – terrorism is not suspected.
Fifteen bodies have now been found but residents hold out little hope that the remaining 35 or so people still missing will be found alive.
Amateur video taken on Saturday night shows when the runaway train carrying 72 cars of crude oil came off the tracks and blew up.
The train owners and the a local fire department now appear to be blaming each other.
An earlier fire on the train where it was parked over night was put out by fire fighters. Shortly afterwards the train experienced brake failure and ran down the hill to Lac-Megantic.