Inter Pipeline Ltd. said Monday that its Cold Lake pipeline was the source of an oil leak discovered late last week in an industrial area east of Edmonton.

The company said it learned of a potential leak near its Strathcona Terminal at around noon Friday, but it wasn't until Monday morning that it confirmed the oil came from its line.

The Alberta Energy Regulator said several operators had shut in their lines on the right of way when the leak was discovered because the source was unclear.

Inter Pipeline said the leak was contained on Friday and it continues to work on cleaning up the spill as lead responder to the incident.

The creek, near 17th Street and Baseline Road, flows directly into the North Saskatchewan River.

The Alberta Energy Regulator is overseeing the response. It is working with Inter Pipeline, Alberta Environment and Parks and Environment Canada to ensure all safety and environmental requirements are met.

The regulator said it still doesn't know how much oil spilled. It said the crude spilled into an unnamed creek and has affected some wildlife, though Inter Pipeline said there is no risk to the public.