"It looks like it may be a small crack in the line," said company spokesman Andrew Galarnyk.
The Wall Street Journal reported that an unspecified amount of oil had leaked near the town of Hope in British Columbia from the Trans Mountain Pipeline, which runs from the province of Alberta to the west coast.
Previously this month, the same pipeline was responsible for releasing about six barrels of oil onto the ground near the town of Kingsvale, British Columbia, the Journal said.
In the current incident, the company said it noticed oil on the ground and shut down the pipeline as a precaution.
The spilled oil is on government-owned land. The company said. no residents were in harm's way.
Canada's National Energy Board said it would investigate both spills to see if they were related.