The train that derailed and exploded in Lac-Mégantic, Quebec, killing at least five people, was hauling cars filled with crude oil destined for the oil refinery in Saint John.
Irving Oil issuing a statement confirming that Montreal, Maine & Atlantic Railway was transporting the product to the Port City and offering emergency response assistance to authorities.
About 40 people are missing and 30 buildings have been demolished after the tanker cars, covered in oil, caught fire.
It's not yet completely clear how the train, which was parked for a crew change, somehow slipped its brakes, rolled downhill and left the tracks. Transportation Safety Board investigators are waiting to investigate the train wreckage.