Updated

Authorities say the death toll in the oil train derailment and explosion in Quebec over the weekend is now 15. Two more bodies have been found.

Officials say 50 people are still missing, including those dead.

The explosions and fires early Saturday tore through a busy downtown bar area. The zone remained too dangerous for first responders to fully explore until Tuesday.

Investigators are looking into a fire on the train in the hours before the disaster.