CN Rail told the BBC that operations were temporarily suspended in the affected area in the province of Ontario.
Related stories
Party conference will be more upbeat than last year, Tories say – but that’s not the whole story
‘You have 10 minutes to decide’: answering the life-changing call to become a kinship carer
Elena Rybakina loses first match as world No. 1 to 118th-ranked opponent
Bosnians vote as pro-Russian politician looms large and ethnic tensions simmer
Debris found from plane that went missing off US coast
For delicate Crepe, it’s a brave new world