Air filled with smoke and ash following explosion in Lac-Megantic
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Quebec train blast: Criminal inquiry launched

10 July 2013 Last updated at 06:58 BST

A criminal inquiry has been launched in Canada into the derailment of an oil train that killed at least 15 people in a small Quebec town on Saturday.

Quebec police inspector Michel Forget said investigators had found evidence leading them toward a criminal probe.

The runaway train derailed in the town of Lac-Megantic, exploding and destroying dozens of buildings.

David Willis reports.