Fort McMurray wildfire cuts Canada's oil output by a third

Blaze that partly destroyed city has temporarily shut down Alberta's oil sands production - a mainstay of the country's petroleum industry

A wildfire that partly destroyed the city of Fort McMurray has cut Canada's oil output by as much as a third after forcing the oil sands industry to effectively shut down in the province of Alberta.

Related: Fort McMurray evacuees caught in uneasy limbo week after wildfires