Canada train blast: Blame game over Lac-Megantic disaster
9 July 2013 Last updated at 23:26 BST
A rail firm and fire department appear to be pointing the finger at one another over a Canadian oil train blast that has killed at least 15 people.
Investigators say the tragedy may have been caused by a chain of events stemming from an earlier fire.
Shortly after fire crews put out a blaze on the train, it experienced brake failure, ran away and exploded in the Quebec town of Lac-Megantic.
Around 50 people are still missing.
David Willis reports.