Even as the people of Lac-M茅gantic whose homes weren't destroyed return, dozens of their neighbors remain missing. The town was devastated Saturday when a freight train derailed and tank cars filled with oil exploded.

The train had been stopped outside the town and was unmanned when it started to move again. After some cars derailed, a fire broke out. Explosions followed. Authorities say that one person as died.

Five people are known to have been killed when tank cars loaded with oil derailed and began exploding on Saturday. But when Monday dawned, another 40 people were still unaccounted for.

The death toll has risen to three after a train carrying crude oil derailed in Quebec on Saturday. The blistering explosion destroyed a town center, and officials say the ongoing fires are keeping rescuers from searching the rest of the train.