TransCanada is responding to a natural gas leak west of Fort McMurray.
The operators control centre detected a drop in pressure in a section of its north central corridor natural gas pipeline at approximately 2:50 am today.
The affected section of line spans between the Wooden House and Buffalo Compressor Stations, roughly 138 kilometers outside city limits.
TransCanada says although the leak has been confirmed, the volume and the cause of the release remains under investigation.
Fort McMurray News will provide more information as it becomes available.