Edward Burkhardt, the CEO of Rail World Inc, has said that an employee of the company suspected of failing to engage the brakes of a runaway train has been suspended without pay.
On his first visit to the small Canadian town of Lac-Mégantic, where the blast occurred, Mr Burkhardt said it looked "like a war zone".
He also said he believes "there was no sabotage" to the train - something he is reported to have alleged earlier.
More top news
The case of a child killer who was the first person to be convicted under DNA evidence is to be reviewed by the Parole Board.
A summary of the day's election campaign stories in under one minute.
Amanda Holden has told ITV News of the "horrendous" moment she feared her sister had been caught up in a deadly avalanche on Mount Everest.