The head of the railway company, Rail World, Inc. involved in the train derailment in Canada, visited the scene of the tragedy Wednesday.
Edward Burkhardt said he suspects the train's engineer of doing "something wrong" before the derailment.
What exactly happened is still the focus of ongoing investigations.
But there's no doubt about the extent of the devastation after the train loaded with crude oil slammed into the town of Lac-Megantic, Quebec.
Dozens of buildings were destroyed and more than 60 people dead or missing.
Anchor Marco Werman spoke with Richard Valdmanis, a reporter and Boston Bureau Chief for Reuters who has been reporting from Lac-Megantic since Saturday.