Cause Of Derailment Not Known

The Transportation Safety Board of Canada says the cause of a 22-car derailment 45 kilometres east of Nipigon is still being assessed.
Spokesperson Chris Krepski says two tank cars are confirmed to have leaked propane gas.
Krepski says the Board is currently conducting a thorough site examination, and are looking at certain equipment, including the pressure tank cars, once it is safe to do so.
The derailment shut down Highway 17 for most of yesterday.